Audi A6 2.0L TFSI Turbo (2012–2018) Platform Guide
In this Vehicle Platform Guide, you will find the top common issues of Audi A6 (C7; 2012-2018) 2.0L Turbocharged Inline-4 TFSI, along with their fault codes, and the solutions from eEuroparts.com.
The 2012–2018 Audi A6 2.0 TFSI (C7) blends turbocharged efficiency with executive refinement, powered by a longitudinally mounted 2.0-liter inline-four delivering up to 220 hp and 350 Nm of torque. Paired with either a 6-speed manual or 8-speed Tiptronic, and available in FWD or Quattro AWD, it offers brisk acceleration and fuel economy up to 44 MPG. With direct injection, intercooling, and a low drag coefficient, the A6 delivers agile handling and a composed ride, while its tech-rich cabin and understated luxury make it a smart choice for drivers seeking performance, comfort, and practicality in a sleek, business-class package. Following image is AI generated.
Specifications
Engine and Powertrain
Engine:
2.0L Turbocharged Inline-Four (TFSI)
Engine Code:
CAEB, CNCD, CYMC
Transmission:
CVT, 8-speed Tiptronic automatic, or 7-speed S tronic dual-clutch
Fuel Type:
Gasoline
Horsepower:
211–252 hp (varies by model year)
Torque:
258–273 lb-ft
Fuel Economy (EPA Estimates)
City/Highway Combined:
24–33 MPG (varies by configuration and year)
Vehicle Weight
Curb Weight:
~ 3,660 lbs
Gross Weight:
~ 5,004 lbs
Configurations and Submodels
Body Styles:
sedan
Seating Capacity:
5 passengers
Drivetrain Options:
Front-Wheel Drive (CVT models) quattro All-Wheel Drive (S tronic or Tiptronic models)
Top Common Issues with Audi A6 (C7; 2012-2018) 2.0L Turbocharged Inline-4 TFSI
Brake Booster Vacuum Pump
1. Brake Booster Vacuum Pump Failure
Fault codes:
P1479 signals high fan control circuit malfunction, often causing overheating, poor A/C performance, and erratic cooling fan operation or failure.
Why it happens:
Brake booster vacuum pump failure occurs due to worn seals, cracked hoses, electrical faults, or internal damage from heat, debris, or fluid contamination.
Symptoms:
The brake pedal becomes stiff and requires excessive force to engage, indicating loss of vacuum assist.
Stopping distances increase noticeably, as the booster fails to amplify braking pressure effectively.
A hissing noise may be heard near the firewall or engine bay, caused by vacuum leaks in the pump or lines.
Dashboard warning lights, such as ABS or brake system alerts, may illuminate due to reduced braking performance.
Engine performance may degrade slightly, especially at idle, as the failing pump disrupts vacuum balance.
Parts to Replace
Pierburg Audi Vacuum Pump- 724807290 The PIERBURG Vacuum Pump is an essential component designed to enhance the braking performance of your Audi. With its high-quality construction and premium-grade materials, this vacuum pump ensures long-lasting durability and reliability.
Rein Audi Power Brake Booster Vacuum Pump BVP0064 The Rein Power Brake Booster Vacuum Pump, part number BVP0064, is a crucial component designed to enhance the braking performance of your Audi vehicle.
C0035–C0050 codes indicate wheel speed sensor faults at each corner, disrupting ABS, traction control, and stability system functionality.
Why it happens:
ABS wheel speed sensor failure occurs from debris buildup, damaged tone rings, wiring faults, corrosion, or internal sensor degradation over time.
Symptoms:
The ABS warning light illuminates on the dashboard, indicating a loss of sensor input to the control module.
The brake pedal pulsates during normal braking, caused by erratic ABS activation from incorrect wheel speed readings.
Traction control and stability systems become disabled, as they rely on accurate wheel speed data to function.
The vehicle may experience longer stopping distances due to the ABS system failing to prevent wheel lockup.
The speedometer may stop working or display erratic readings, especially in older vehicles using ABS sensors for speed input.
Parts to Replace
Sensor 4E0927804F The Genuine VW/Audi ABS Wheel Speed Sensor 4E0927804F is an essential component for maintaining optimal performance in vehicles equipped with an Anti-lock Braking System (ABS).
OE Supplier Sensor 4E0927804F This premium-grade component is designed to meet or exceed OEM standards, providing reliable operation in your Audi or Volkswagen.
Audi Porsche ABS Wheel Speed Sensor - 0265007928 This premium-grade sensor accurately reports the speed of the wheel back to the ABS control unit, allowing it to determine if a brake lock-up situation is occurring.
C1234 flags right front wheel speed sensor signal loss; C121D indicates brake pressure sensor circuit fault, impairing ABS and stability control.
Why it happens:
Brake master cylinder fails due to internal seal wear, fluid contamination, corrosion, overheating, manufacturing defects, or improper bleeding during maintenance.
Symptoms:
Spongy brake pedal: The pedal feels soft or sinks slowly when pressed, indicating internal seal failure or air in the system.
Brake fluid leaks: Visible fluid around the master cylinder or firewall suggests a compromised housing or worn seals.
Inconsistent braking: Brakes may engage erratically or require varying pedal pressure due to uneven hydraulic pressure distribution.
Brake warning light: The dashboard brake indicator may illuminate if fluid levels drop or pressure sensors detect irregularities.
Complete brake failure: In severe cases, the vehicle may lose braking ability entirely, posing a critical safety risk.
Audi Brake Master Cylinder 4G1611021A The Brake Master Cylinder is a crucial component of your vehicle's braking system, responsible for generating the hydraulic pressure necessary for effective braking.
TRW Brake Master Cylinder Part # PML356 TRW PML356 master cylinder delivers precise hydraulic pressure, fits Audi/VW models, 25.4 mm bore, ensures reliable braking and OE performance.
C1234 indicates right front wheel speed sensor signal loss, disrupting ABS function, causing traction issues and triggering warning lights on dashboard.
Why it happens:
Brake pad wear sensor malfunctions due to wire damage, corrosion, misalignment, poor installation, electronic interference, or worn pads not triggering alerts.
Symptoms:
False warning light: The brake wear indicator illuminates even though the pads are still in good condition.
No warning when pads are worn: The sensor fails to alert when pads reach minimum thickness, risking rotor damage.
Intermittent dashboard alerts: Warning light flickers inconsistently due to poor sensor connection or electronic interference.
ABS or brake system fault codes: Diagnostic scan reveals sensor-related fault codes like C1A56 or C1A57, indicating circuit issues.
Unusual brake pedal feel: Sensor malfunction may coincide with uneven pad wear, causing vibration or inconsistent pedal response.
Parts to Replace
Front 4G0615121B This sensor monitors the thickness of your brake pads and alerts you when they are nearing the end of their life. With a simple loop of wire extending from the back of the brake pad, it maintains an electrical circuit that keeps the warning light off.
Audi Rear 4G0615121 The Genuine VW/Audi Audi Porsche Disc Brake Pad Wear Sensor is an essential component designed specifically for Audi and Porsche vehicles.
OEM Audi Porsche Disc Brake Pad Wear Sensor - Rear- Aftermarket XHDZ029 Designed specifically for select Audi and Porsche models, this premium-grade sensor alerts you when your brake pads are nearing the end of their life, helping you avoid potential brake failure and costly repairs.
Rubber degradation, oil contamination, excessive load, aggressive driving, poor roads, heat cycles, and age-related wear cause bushing failure over time.
Symptoms:
Clunking noises when driving over bumps or during turns often indicate excessive play in the control arm bushings.
Steering instability or wandering at high speeds suggests compromised alignment due to worn bushings.
Uneven tire wear may result from altered suspension geometry caused by bushing deterioration.
Vibration through the steering wheel, especially during acceleration or braking, can stem from loose or degraded bushings.
Poor braking response or nose-diving under load may occur when bushings fail to maintain proper suspension control.
Parts to Replace
Front Lower Rearward 4G0407183B The Genuine VW/Audi Suspension Control Arm Bushing, part number 4G0407183B, is an essential component for maintaining the performance and comfort of your Audi.
Front Upper 4H0407515B The genuine VW/Audi Suspension Control Arm Bushing part number 4H0407515B is engineered to enhance your Audi's performance while ensuring optimal control and stability on the road.
Mevotech Volkswagen Audi Suspension Control Arm Bushing - Front Lower Outer - MS70431. The Mevotech MS70431 Suspension Control Arm Bushing is designed to enhance your vehicle's handling and stability by providing critical support to the suspension system.
C1131 and C1132 indicate ECM-ABS communication faults via CAN network, often causing ABS light, poor braking, and traction issues.
Why it happens:
Moisture intrusion, worn seals, clogged filters, electrical faults, overheating, relay failure, or excessive cycling degrade compressor performance and cause failure.
Symptoms:
The vehicle sits lower than normal, especially after overnight parking, indicating the compressor isn’t maintaining air pressure.
Suspension warning light appears on the dashboard due to system pressure loss or compressor malfunction.
Loud or unusual noises from the compressor suggest internal wear, motor strain, or failing bearings.
Extended compressor run time or frequent cycling points to air leaks or reduced efficiency.
Harsh or bouncy ride quality results from insufficient air pressure in the suspension system.
Parts to Replace
OEM Audi Air Suspension Compressor 4G0616005D The Genuine VW/Audi Air Suspension Compressor part number 4G0616005D is designed to provide reliable, high-performance support for your Audi vehicle's suspension system.
Arnott Air Suspension Compressor Part # P-3278 The Arnott Industries P-3278 Air Suspension Compressor is designed to provide reliable support for your vehicle's air suspension system, ensuring optimal ride quality and performance.
C1122 signals a fault in the front right ABS solenoid, often causing uneven braking, ABS light, and reduced control.
Why it happens:
Air suspension solenoid valves fail due to overheating, debris blockage, air leaks, faulty sensors, or compressor damage disrupting pressure regulation and flow.
Symptoms:
The vehicle sags or sits lower on one corner, indicating uneven air distribution.
Ride height adjustments fail or respond slowly due to blocked or sticky valve operation.
A persistent hissing sound may signal internal air leaks within the valve block.
The suspension warning light illuminates, triggered by pressure irregularities or valve malfunction.
Driving feels rougher or unstable, as the system can't maintain proper damping or height balance.
Parts to Replace
Arnott Audi Air Suspension Solenoid Valve Unit- VB3491 The Arnott Industries VB-3491 air suspension solenoid valve unit is compatible with a range of Audi part numbers, including 4H0616013, 4H0616013A, and 4H0616013B.
FCS Auto Air Suspension Solenoid Valve Unit Part # MV002. The FCS Auto Parts Air Suspension Solenoid Valve Unit is engineered to meet OEM standards, ensuring a seamless fit and reliable performance for your Audi vehicle.
OEG Air Suspension Solenoid Valve Unit Part # OEG-3289 The Original Equipment Group OEG-3289 Air Suspension Solenoid Valve Unit is designed to provide precise control of your vehicle's air suspension system, ensuring optimal ride quality and comfort.
C1146 indicates a fault in the Side G sensor circuit, affecting ABS or airbag stability due to poor signal integrity.
Why it happens:
Ride height sensor failure occurs from moisture intrusion, debris damage, wiring faults, misalignment, or overextension during suspension repairs or calibration errors.
Symptoms:
The vehicle sits unevenly, often sagging on one side due to incorrect height readings.
The air suspension warning light illuminates, triggered by faulty sensor signals to the control module.
Ride quality deteriorates, with the vehicle feeling unusually stiff or bouncy over bumps.
Automatic headlight leveling malfunctions, causing poor beam alignment during driving.
Height adjustments fail to respond or calibrate properly, especially after loading or unloading the vehicle.
Parts to Replace
Front Driver Side- RH3588 The Arnott Industries Suspension Ride Height Sensor, part number RH-3588, is the ideal solution for Audi owners seeking to replace a worn or malfunctioning ride height sensor.
Rear Left Part # RH-3590 The Arnott Industries RH-3590 Suspension Ride Height Sensor is designed to ensure accurate ride height measurement for your vehicle's suspension system.
Front Left Part # HS009. This premium-grade sensor is engineered to OEM standards, ensuring reliable operation and long-lasting durability.
P0335 indicates crankshaft position sensor “A” circuit malfunction—caused by sensor failure, damaged wiring, bad reluctor ring, or ECM issues.
Why it happens:
Crankshaft sensor failure occurs due to heat damage, vibration, oil contamination, magnetic interference, wiring faults, or reluctor ring wear and misalignment.
Symptoms:
Engine stalling or sudden shutdown occurs when the ECU loses crankshaft signal, cutting fuel or spark unexpectedly.
Hard starting or no-start condition results from the ECU not receiving timing data to initiate ignition or fuel injection.
Check engine light illuminates with fault codes like P0335, indicating sensor circuit malfunction or signal loss.
Engine misfires or poor performance happen due to erratic timing signals disrupting combustion synchronization.
Reduced fuel efficiency stems from incorrect ignition timing, causing incomplete combustion and increased fuel consumption.
Steering shaft failure occurs from worn universal joints, lack of lubrication, corrosion, misalignment, impact damage, or poor-quality aftermarket components.
Symptoms:
Clunking or knocking sounds: You may hear metallic clunks when turning the wheel, especially during low-speed maneuvers or parking.
Loose steering feel: The steering wheel may feel wobbly or have excessive play before the wheels respond.
Difficulty turning: Increased resistance or binding while steering suggests worn universal joints or shaft misalignment.
Vibration through the wheel: A failing shaft can transmit vibrations, especially at highway speeds or over uneven surfaces.
Wheel doesn’t self-center: After a turn, the steering wheel may not return smoothly to center due to joint stiffness or internal wear.
Parts to Replace
OEM Audi Steering Shaft 4G1419753C The Genuine VW/Audi Steering Shaft part number 4G1419753C is an essential replacement component designed to restore your Audi's steering functionality to optimal performance.
Uneven tire wear appears on one side, often due to misaligned suspension geometry from a bent or damaged knuckle.
Clunking or grinding noises emerge during turns or over bumps, caused by loose or misaligned components attached to the knuckle.
Steering wheel vibration intensifies at higher speeds, especially if the knuckle disrupts wheel balance or alignment.
The vehicle pulls to one side even when the steering wheel is centered, indicating camber or toe angle distortion.
Delayed or sloppy steering response occurs when the knuckle fails to maintain proper linkage between the wheel and steering system.
Parts to Replace
Passenger Side 4G0407254A The Genuine VW/Audi Steering Knuckle part number 4G0407254A is a high-quality, vital component for your Audi's steering system.
Driver Side 4G0407253A The Genuine VW/Audi Steering Knuckle part number 4G0407253A is an essential component for your Audi's steering system. This high-quality part is designed to perfectly fit your vehicle and provide optimal performance.
Front Driver Side 4G0407253B The Genuine VW/Audi Steering Knuckle is a premium replacement part engineered specifically for Audi vehicles.
Passenger Side 4G0407254B The Genuine VW/Audi Steering Knuckle, part number 4G0407254B, is engineered to meet the highest standards of quality and reliability.
Rack and pinion bellows fail from age, road debris, heat, fluid contamination, improper installation, or torn boots exposing internal components to damage.
Symptoms:
Visible cracks or tears in the bellows expose the inner rack to dirt, moisture, and road debris.
Leaking power steering fluid near the tie rod ends or bellows indicates compromised seals or contamination.
Steering feels loose or imprecise, often due to accelerated wear on internal components from unprotected exposure.
Clunking or popping noises during turns suggest debris intrusion or misalignment caused by damaged bellows.
Premature inner tie rod wear occurs when bellows fail to shield moving parts from grit and corrosion.
Parts to Replace
Front Inner 4G0423832A The Genuine VW/Audi Rack and Pinion Bellows, part number 4G0423832A, is an essential component for maintaining the integrity of your Audi's steering system.
Front Inner 4G0423831 This Genuine VW/Audi Tie Rod Boot, part number 4G0423831, is an essential component designed to provide superior protection for your Audi's steering system.
P0236 and P0299 indicate turbo boost sensor range error and underboost condition—likely caused by leaks, actuator faults, or sensor issues.
Why it happens:
Boost sensor or turbo fails due to leaks, worn bearings, actuator faults, clogged lines, electrical issues, or excessive heat stress.
Symptoms:
Engine lacks power during acceleration, especially under load or uphill driving.
Check Engine Light illuminates, often accompanied by fault codes like P0236 or P0299.
Whistling, whining, or metallic noises emerge from the turbo area during spool-up.
Excessive exhaust smoke appears—blue for oil burn, black for rich fuel mixture.
Fuel efficiency drops noticeably due to poor combustion and reduced boost pressure.
Parts to Replace
OEM Audi MAP Sensor 038906051E The Genuine VW/Audi Turbocharger Boost Sensor (part number 038906051E) is an essential component designed to optimize engine performance for a range of Audi vehicles.
Nissens Audi Turbocharger 93433 The Nissens Turbocharger part number 93433 is a premium-grade replacement component designed for a variety of Audi models.
Standard Turbocharger Part # TBC623. Standard Ignition TBC623 is a new, direct-fit turbocharger for 2.0L Audi engines, includes manifold and wastegate actuator.
IHI Turbocharger Part # 1704231284 The IHI Turbo Turbocharger with Exhaust Manifold part number 1704231284 is a premium quality replacement part designed specifically for your Audi.
P0300–P0304 indicate random and cylinder-specific misfires; P0507 signals high idle RPM - caused by ignition, fuel, or air faults.
Why it happens:
Valve failure occurs from carbon deposits, overheating, poor lubrication, timing issues, worn guides, bent stems, or weak springs causing missealing.
Symptoms:
Engine misfires occur frequently, especially during cold starts or under load.
Compression readings drop in affected cylinders due to poor valve sealing.
Tapping or clicking noises emerge from the valvetrain area during operation.
Exhaust emits unusual smoke—blue for oil burn, white for coolant intrusion.
Power loss and rough idling persist despite ignition and fuel system checks.
Parts to Replace
Audi VW Intake Valve 06D109601M The Genuine VW/Audi Engine Intake Valve part number 06D109601M is the ideal replacement component for your Audi's intake system.
Audi Exhaust Valve 06D109611H This premium-grade exhaust valve opens and closes in perfect synchronization with the intake valve and piston movement, ensuring optimal engine performance at all speeds.
OEM Audi VW Valve Stem Seal 036109675A The Genuine VW/Audi Engine Valve Stem Oil Seal part number 036109675A is an essential component for maintaining the performance and longevity of your Audi vehicle.
Elring Audi Bentley Lamborghini Engine Valve Stem Oil Seal 724.590 The Elring Engine Valve Stem Oil Seal is a premium-grade component designed to ensure reliable engine performance in various European vehicles, including Audi, Volkswagen, Porsche, Bentley, and Lamborghini.
P0016, P0017, and P0011 signal timing misalignment - camshaft and crankshaft correlation errors or VVT over-advance due to mechanical faults.
Why it happens:
Timing chain failure stems from poor lubrication, worn tensioners, overheating, oil contamination, or excessive engine load causing stretch, misalignment, or breakage.
Symptoms:
Rattling noise at startup or idle suggests a loose or stretched timing chain slapping against internal components.
Check engine light activation often signals timing misalignment due to chain wear or skipped teeth.
Engine misfires or rough running occur when valve timing is disrupted by chain slack or guide failure.
Poor acceleration and reduced power result from incorrect camshaft timing affecting combustion efficiency.
Difficulty starting or complete no-start may indicate the chain has jumped or broken, halting engine synchronization.
Parts to Replace
OEM Audi VW Engine Oil Pump Chain 06K115225C The Genuine VW/Audi Engine Oil Pump Chain (part number 06K115225C) is an essential component designed to maintain the performance and efficiency of your Audi's engine.
Lower Part # 50052405 The IWIS Engine Timing Chain part number 50052405 is a critical component designed to enhance the performance and reliability of your Audi or Volkswagen engine.
Kit Genuine VW/Audi 5128621 kit includes chain, guides, tensioners, bolts—OE-fit, durable, precise timing restoration for Audi 2.0L engines.
Genuine VW/Audi 3088416 kit includes chain, guides, tensioners, bolts—OE-grade fitment for Audi 2.0L engines, 2013–2017 models.
P0101 flags MAF sensor performance issue—caused by dirty sensor, intake leaks, faulty wiring, or airflow outside expected range.
Why it happens:
Mass Air Flow sensor fails due to dirt buildup, oil contamination, damaged wiring, intake leaks, poor filtration, or sensor aging.
Symptoms:
Check Engine Light – A faulty MAF sensor often triggers the check engine light due to incorrect airflow data sent to the ECU.
Poor Acceleration – The engine hesitates or feels sluggish because the air-fuel mixture becomes imbalanced from inaccurate sensor readings.
Rough Idle – Unstable airflow measurement causes the engine to idle unevenly or even stall at low RPMs.
Decreased Fuel Efficiency – The ECU overcompensates with excess fuel, leading to noticeably reduced mileage.
Black Exhaust Smoke – A rich fuel mixture from bad MAF data results in incomplete combustion and visible black smoke from the tailpipe.
Parts to Replace
OEM Audi Mass Air Flow Sensor 06J906461D The Genuine VW/Audi Audi Mass Air Flow Sensor 06J906461D is designed to ensure your engine control unit (ECU) receives precise information about the volume of air entering the engine.
Hitachi Audi Mass Air Flow Sensor- MAF0116 The Hitachi Mass Air Flow Sensor (MAF0116) is an essential component for maintaining optimal engine performance in your Audi or Volkswagen vehicle.
Hella Audi Mass Air Flow Sensor 009149591 The Hella Mass Air Flow Sensor (MAF) 009149591 is a premium-grade replacement part designed to meet or exceed OEM standards for performance and reliability.
P2111, P2112, P2101, and P0121 indicate throttle actuator or position sensor faults - causing limp mode, poor acceleration, stalling.
Why it happens:
Throttle body failure occurs due to carbon buildup, electrical faults, motor wear, poor lubrication, overheating, or contaminated fuel affecting sensors.
Symptoms:
Engine stalls unexpectedly at idle or low speeds due to poor airflow regulation.
Acceleration becomes sluggish or jerky, especially when transitioning from stop to throttle.
RPM fluctuates erratically while idling, indicating inconsistent throttle plate positioning.
Check Engine Light activates, often with codes like P2111, P2112, or P0121.
Vehicle enters limp mode, restricting power output to protect engine and drivetrain systems.
Parts to Replace
OEM Audi VW Throttle Body 06F133062T The Genuine VW/Audi Fuel Injection Throttle Body, part number 06F133062T, is an essential component designed specifically for Audi vehicles.
Standard Fuel Injection Throttle Body Part # S20070. Standard Ignition S20070 throttle body fits Audi/VW, features 6-blade terminals, OE-calibrated sensors, sealed bearings, and requires relearn after installation.
P0087, P2293, and P0191 indicate low or unstable fuel rail pressure—caused by pump failure, sensor faults, or restrictions.
Why it happens:
Fuel contamination, overheating, poor lubrication, worn cam follower, low tank level, or faulty lift pump overstress and degrade high-pressure pump components.
Symptoms:
Loss of engine power occurs during acceleration or uphill driving due to insufficient fuel pressure reaching the injectors.
Hard starting or no start happens when the pump fails to deliver adequate fuel for combustion.
Engine misfires or sputters result from inconsistent fuel delivery disrupting combustion timing.
Sudden surges or jerking during driving indicate erratic fuel pressure regulation.
Fuel smell in exhaust suggests an overly rich mixture caused by improper fuel atomization.
Parts to Replace
OEM Direct Injection High Pressure Fuel Pump Part # 06J127025L The Genuine VW/Audi Direct Injection High Pressure Fuel Pump, part number 06J127025L, is engineered to meet and exceed OEM standards, ensuring superior performance and reliability for your Audi vehicle.
OEM Audi VW Engine Valve Lifter 022109423D The Genuine VW/Audi Engine Valve Lifter, part number 022109423D, is a premium-quality replacement designed specifically for Audi vehicles.
P0201–P0206 indicate injector circuit faults in cylinders 1–6—caused by wiring issues, failed injectors, or ECM driver malfunction.
Why it happens:
Fuel injector failure stems from contamination, electrical faults, seal wear, overheating, poor fuel quality, or neglected maintenance causing clogging or leakage.
Symptoms:
Engine misfires occur when clogged or faulty injectors disrupt fuel delivery to one or more cylinders.
Rough idling or stalling happens due to uneven fuel supply, especially noticeable when the engine is cold or stationary.
Poor fuel economy results from leaking or inefficient injectors causing excess fuel consumption.
Strong fuel odor may indicate external leaks or unburnt fuel entering the exhaust due to injector malfunction.
Illuminated check engine light often signals injector circuit faults or performance issues detected by the ECU.
Parts to Replace
OEM Audi Fuel Injector 06H906036AE The Genuine VW/Audi Fuel Injector part number 06H906036AE is engineered to meet OEM standards, providing Audi owners with a reliable replacement that enhances vehicle performance and efficiency.
Fuel Injector 62855 The Bosch Fuel Injector part number 62855 is engineered to deliver exceptional performance and reliability for your Audi and Volkswagen vehicles.
GB Reman Fuel Injector (Remanufactured) Part # 855-12105 The GB Fuel Injector, part number 855-12105, is engineered specifically for Audi and Volkswagen vehicles, providing a reliable and efficient solution for fuel injection needs.
Standard Fuel Injector Part # FJ1057. Standard Ignition FJ1057 is a GDI fuel injector with needle valve, OE fitment, metal body, dual ports, threaded inlet.
Bosch Audi Starter Motor SR0792X This premium-grade starter motor is designed to deliver the power needed to start your engine smoothly and efficiently.
Audi Starter Motor- 2800430 The DENSO Starter Motor 280-0430 is engineered to OEM standards, ensuring reliable performance and longevity.
Valeo Audi Starter Motor 442275 The Valeo Starter Motor part number 442275 is an essential component for ensuring the smooth and reliable operation of your Audi vehicle.
P0620, P0562, U140A indicate generator control fault, low system voltage, and implausible right front wheel speed sensor signal respectively.
Why it happens:
Alternators fail due to worn bearings, diode failure, voltage regulator faults, overheating, fluid contamination, poor grounding, or excessive electrical load.
Symptoms:
Battery Warning Light – The dashboard battery icon illuminates when the alternator output drops below required voltage levels.
Dim or Flickering Lights – Headlights and interior lights lose brightness or flicker due to inconsistent electrical supply.
Dead Battery – A failing alternator can't recharge the battery, leading to repeated battery drain and starting issues.
Electrical Accessory Malfunctions – Power windows, infotainment, or climate controls behave erratically from insufficient voltage.
Engine Stalling or Hard Starting – The engine may stall or struggle to start as ignition and fuel systems lose stable power.
Parts to Replace
Audi Alternator 06H903018M The Genuine VW/Audi Alternator 06H903018M is designed to deliver reliable power for your Audi vehicle.
Audi Alternator CAL15011GS The OEM Audi Alternator CAL15011GS is engineered to meet the highest standards of quality and performance, making it the ideal choice for your Audi vehicle.
Audi Alternator- AL9452X The Bosch Audi Alternator 06H903018M is engineered to meet OEM standards, providing reliable performance for your vehicle's electrical system.
Rebuilt- AL9384X Bosch AL9384X rebuilt alternator delivers 14V, 140A output—OE fit, durable, for Audi 2.0L TFSI models, 2013–2017 range.
Audi Manual Transmission Shift Knob 4G1713139NIBR The Genuine VW/Audi Manual Transmission Shift Knob, part number 4G1713139N IBR, is an essential component designed for Audi enthusiasts seeking a premium replacement part.
Worn seals, damaged pan, loose bolts, cracked lines, overheating, poor installation, or age-related wear cause transmission fluid leaks.
Symptoms:
Red or brown puddles under the vehicle after parking indicate fluid escaping from the transmission system.
Delayed or slipping gear shifts suggest insufficient fluid pressure due to leakage.
Burning smell during driving may result from overheated transmission fluid caused by low levels.
Unusual whining or grinding noises from the transmission often signal inadequate lubrication.
Dashboard warning lights, especially the transmission or check engine light, may illuminate due to fluid loss affecting system performance.
Parts to Replace
OEM Automatic Transmission Service Kit (ATF 7 Liter) Part # 5128134-Kit. OE-grade kit includes fluid, filter, O-rings, drain plug—ensures clean shifts, leak prevention, and extended transmission life. Fits Audi.
OEM Audi Auto Trans Filter 0AW301516H The Genuine VW/Audi Transmission Filter, part number 0AW301516H, is engineered to OEM standards, making it the ideal replacement part for Audi owners who prioritize reliability and performance.
Genuine VW/Audi Automatic Transmission Fluid G052516A2 The Genuine VW/Audi Dual Clutch Trans Fluid (Multi DCTF) is engineered to meet the demanding specifications required for optimal performance in dual-clutch transmission systems.
P0133 and P0153 indicate slow response from upstream O2 sensors - Bank 1 and Bank 2 - causing poor fuel-air regulation.
Why it happens:
Oxygen sensor fails from age, contamination by fuel additives, overheating, oil ash buildup, poor fuel quality, or exhaust leaks.
Symptoms:
Check Engine Light – A faulty oxygen sensor often triggers the check engine light due to incorrect air-fuel ratio readings.
Poor Fuel Economy – The ECU receives inaccurate data, causing excessive fuel delivery and reduced mileage.
Rough Idle – Engine idles unevenly because the sensor misreports oxygen levels, disrupting combustion balance.
Failed Emissions Test – Inaccurate readings lead to high emissions, often resulting in test failure.
Engine Hesitation or Stalling – Erratic sensor output causes unstable fuel delivery, leading to hesitation or sudden stalling during acceleration.
Parts to Replace
Front 1K0998262L The Genuine VW/Audi Oxygen Sensor is a critical component designed to optimize your engine's performance and reduce emissions.
Audi Porsche Oxygen Sensor- 17178 The Bosch Oxygen Sensor 17178 is an essential component for maintaining optimal engine performance in select Audi, Porsche, and Volkswagen models.
Audi Oxygen Sensor- 16002 Designed to meet or exceed OEM specifications, this premium-grade sensor is engineered to accurately measure the concentration of oxygen in your vehicle's exhaust system.
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Conclusion
Whether you're chasing a drivability issue, planning preventive maintenance, or resolving a CEL, eEuroparts.com delivers the exact-fit solutions Audi technicians trust, helping you restore factory performance and enjoy your A6 for many miles to come.
Frequently Asked Questions
Why is my A6 2.0T consuming so much oil? ⌄
Worn piston rings, valve seals, or a failed PCV valve are typical. Symptoms: frequent top-ups, blue smoke, or fouled plugs .
Why does my car misfire under load? ⌄
Failed ignition coils, spark plugs, or injectors (P0300–P0304). Expect hesitation, rough idle, or loss of power .
Why does my A6 overheat or lose coolant? ⌄
Failing water pump or thermostat housing (P2181, P00B7). Symptoms: coolant leaks, overheating, or low reservoir levels .
Why does fuel economy drop suddenly? ⌄
Carbon buildup on intake valves is common in direct-injection engines. Causes reduced airflow, poor MPG, and sluggish acceleration .
Why is my steering heavy or noisy? ⌄
Power steering pump or fluid reservoir issues cause whining noises, leaks, or stiff steering feel .
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Apr 13, 2025Celebrating 25 Years of Excellence at eEuropartsSince its inception in 2000, eEuroparts has been dedicated to providing European car owners and enthusiasts throughout the United States with top-quality Genuine, OEM, and premium aftermarket parts. What started as a small passion project has evolved into a prominent player in the auto parts sector, renowned for its dependability, swift shipping, and unparalleled customer service. Over the years, we've successfully processed more than 20 million orders, ensuring that premium European parts are accessible no matter your location.
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