Land Rover Discovery Sport HSE Luxury 2.0L Turbo Issues & Fixes (2018–2019)

Fault Codes:

C1A23, C1A36 - These codes indicate the brake pad wear sensor has detected pads that are too thin to operate safely.

Why it happens:

Brake pads naturally wear down through regular use, and aggressive driving or heavy braking speeds up the wear until the sensor triggers a warning.

Symptoms:

• Squealing or grinding noise: Occurs when the pad material is worn out and metal starts contacting the rotor.
• Increased stopping distance: Worn pads reduce braking friction, making it harder to slow down quickly.
• Brake warning light: The system alerts you when pad thickness drops below the safe limit.
• Vibration or pulsation: Uneven pad wear causes the rotor to shake during braking.

Parts to Replace

• Bosch 5173648 - Disc Brake Pad Kit 8-Kit is designed for brake system maintenance, specifically supporting the replacement of disc brake pads.
• Hella Pagid 5304559 - Disc Brake Pad Kit is designed to support brake system maintenance through the replacement of disc brake pads.

Brands

• Hella Pagid
• Bosch

Fault Codes:

C1A24 - This code may show up if braking performance drops because a rotor is warped, worn, or damaged.

Why it happens:

Rotors face constant heat and friction, which can lead to warping, corrosion, or deep grooves that affect smooth braking.

Symptoms:

• Vibration or pulsation: Warped or uneven rotors cause shaking through the pedal or steering wheel.
• Grinding or squealing noise: Damaged rotor surfaces create harsh contact with the brake pads.
• Increased stopping distance: A rotor in poor condition reduces the system’s ability to slow the vehicle efficiently.
• Visible scoring or rust: Deep grooves or corrosion indicate the rotor surface is deteriorated.

Parts to Replace

• Hella Pagid 5294526 - Disc Brake Rotor Kit supports brake system maintenance by providing an OE-level set of matched components designed for precision fitment and reliability.
• Hella Pagid 5305940 - Disc Brake Rotor Kit.

Brands

• Hella Pagid

Fault Codes:

C1A20 (may appear if the system detects an abnormal suspension pressure reading; standard shocks typically do not set fault codes).

Why it happens:

Shocks lose effectiveness when internal fluid leaks, seals wear out, or gas pressure drops, reducing their ability to control suspension movement.

Symptoms:

• Excessive body roll: The vehicle leans more than normal when cornering.
• Poor ride quality: Small bumps feel harsher because the shock can’t absorb impact.
• Bouncing over bumps: The vehicle continues to bounce instead of settling quickly.
• Uneven tire wear: Worn shocks cause inconsistent road contact, wearing tires unevenly.
• Clunking noise: Internal components loosen and make noise over rough roads.

Parts to Replace

• Bilstein 19-295671 - Suspension Shock Absorber (Rear) is a premium-quality replacement designed specifically for Land Rover vehicles.
• Bilstein 35-293071 - Suspension Strut Assembly (Front Right) is engineered to deliver superior performance and durability for Land Rover vehicles.

Brands

• Bilstein

Fault Codes:

C1A20 (pressure sensor plausibility), C1A13 (ride height sensor fault if equipped with air struts).

Why it happens:

Struts weaken when internal seals wear down, hydraulic fluid leaks out, or gas pressure drops, reducing their ability to support and control the suspension.

Symptoms:

• Excessive bouncing: The vehicle continues to move after hitting bumps.
• Clunking over bumps: Loose internal parts create noise over rough roads.
• Uneven tire wear: Reduced damping causes inconsistent tire contact.
• Nose-diving during braking: The front end dips more than normal when stopping.
• Poor ride quality: The vehicle feels rough and unstable over everyday roads.

Parts to Replace

• Bilstein 22-295668 - Suspension Strut Assembly (Front Right) is engineered to meet OEM standards, providing exceptional performance for your Land Rover.

Brands

• Bilstein

Fault Codes:

P0300 (random misfire), P0301-P0304 (misfire in a specific cylinder), P0365 (ignition coil or spark plug circuit issue). These codes appear when the engine detects incomplete combustion caused by weak or inconsistent spark.

Why it happens:

Spark plugs degrade over time due to worn electrodes, carbon buildup, overheating, or an incorrect spark gap, all of which reduce their ability to ignite the air-fuel mixture properly.

Symptoms:

• Engine misfire: The engine stumbles or shakes when one or more cylinders fail to ignite correctly.
• Rough idle: The engine feels uneven or unstable at low speeds due to inconsistent combustion.
• Poor fuel economy: Misfires waste fuel and force the engine to work harder.
• Sluggish acceleration & CEL: Reduced spark strength lowers power, often triggering the check engine light.

Parts to Replace

• Bosch 8502 - Spark Plug is engineered to meet or exceed OEM specifications, ensuring optimal performance and reliability for your Jaguar and Land Rover vehicles.
• Denso 3502 - Spark Plug This premium-grade spark plug is engineered to OEM standards, ensuring optimal ignition and fuel efficiency for your engine.
• Bosch 5115541 - Ignition Coil Kit.

Brands

• Bosch
• Denso

Why it happens:

Daily driving, potholes, and rough road impacts gradually loosen the tie rod joints, creating excess play in the steering system.

Symptoms:

• Loose steering feel: The wheel feels less responsive because the worn joint creates movement before the wheels turn.
• Uneven tire wear: Poor alignment from loose tie rods causes tires to scrub and wear unevenly.

Parts to Replace

• Lemforder 5225330 - Steering Tie Rod End Kit (Front Outer) is designed to support the maintenance and repair of your vehicle's steering system.
• Bison Performance BPSS16061 - Steering Tie Rod End (Inner) is a high-quality automotive part specifically designed for Land Rover vehicles.

Brands

• Lemforder
• Bison Performance

Fault Codes:

P0217, P2600, P26C9 - These codes indicate cooling system faults such as pump control issues or overheating caused by reduced coolant flow.

Why it happens:

Electric water pumps fail from internal wear, overheating, or electrical problems that prevent the pump from circulating coolant properly.

Symptoms:

• Overheating: The engine temperature climbs because coolant isn’t flowing efficiently.
• Coolant warnings: The system detects low flow or rising temperature and triggers alerts.
• Reduced cabin heat: Poor coolant circulation lowers heater performance.
• CEL: The engine control unit logs a cooling-related fault.

Parts to Replace

• Saleri PA1138 - Engine Water Pump is a premium-grade component designed to provide reliable cooling for your vehicle's engine.
• Pierburg 7.10102.10.0 - Engine Water Pump is engineered to maintain optimal engine cooling performance for select Land Rover and Jaguar models.
• Gates K060763 - Serpentine Belt.
• Gates T36780 - Accessory Drive Belt Idler Pulley.

Brands

• Saleri
• Pierburg
• Gates

Fault Codes:

P0115, P0116, P0117, P0118 - These appear when the sensor sends inaccurate, slow, or out-of-range temperature readings.

Why it happens:

Heat cycles, corrosion, or internal electrical failure cause the sensor to lose accuracy.

Symptoms:

• Erratic temperature gauge: The gauge jumps or reads incorrectly due to faulty data.
• Poor fuel economy: Incorrect readings disrupt fuel mixture calculations.
• Hard starting & CEL: The engine struggles to start when temperature inputs are wrong.

Parts to Replace

• NTK EF0106 - Engine Coolant Temperature Sensor is engineered to deliver reliable performance for your Jaguar and Land Rover vehicles.
• Rein ELC0077 - Engine Coolant Level Sensor is an essential component designed specifically for your Land Rover and Volvo vehicles.
• NTK EE0010 - Engine Coolant Level Senso r is a high-quality replacement designed specifically for Jaguar and Land Rover vehicles.

Brands

• NTK
• Rein

Fault Codes:

P0520, P0521 - These indicate an oil pressure reading that is out of the expected range, often due to restricted oil flow.

Why it happens:

A collapsed filter, clogged media, or a failed bypass valve restricts oil flow and lowers pressure.

Symptoms:

• Low oil pressure warning: Oil can’t circulate properly through the engine.
• Engine ticking noise: Insufficient oil reaches moving components, causing noise.
• Oil leaks: Excess pressure or poor filtration can lead to gasket seepage.
• Reduced performance: The engine limits output to protect itself.

Parts to Replace

• Wix WL10419 - Engine Oil Filter is a premium-quality replacement designed specifically for Jaguar and Land Rover vehicles.
• MAHLE OX 1138D - Engine Oil Filter
• Hengst H319W - Engine Oil Filter

Brands

• MAHLE
• Wix
• Hengst

Fault Codes:

P2279 (intake leak), P0101 (airflow performance) - These appear when airflow entering the engine is restricted or inconsistent.

Why it happens:

A clogged, deteriorated, or collapsed air filter disrupts airflow and throws off the air-fuel balance.

Symptoms:

• Reduced power: The engine can’t breathe properly, limiting acceleration.
• Poor fuel economy: Incorrect airflow causes inefficient combustion.
• Rough idle & CEL: Irregular airflow creates unstable combustion at low RPM.

Parts to Replace

• Wix WA10888 - Engine Air Filter is engineered to provide superior airflow while ensuring optimal filtration for your vehicle's engine.
• MAHLE LX4392 - Engine Air Filter is designed to ensure optimal engine performance by preventing harmful particles from entering the engine.

Brands

• Wix
• Mahle

Fault Codes:

P0171 (lean condition), P0300 (misfire), P0521 (oil pressure range issue) - These often occur when air, oil, or pressure escapes through leaking gaskets or seals.

Why it happens:

Heat, age, and pressure cycles degrade gaskets and seals - such as valve cover, oil pan, or head gaskets - allowing fluids or air to leak.

Symptoms:

• Oil or coolant leaks: Seals weaken and allow fluids to escape.
• Burning smell: Leaked oil drips onto hot components.
• Low oil level: Ongoing leakage lowers engine lubrication.
• Engine misfire & CEL: Air leaks disrupt combustion and trigger fault codes.

Parts to Replace

• Elring 689.970 - Engine Valve Cover Gasket Set is a high-quality replacement designed specifically for a range of Jaguar, Land Rover, and Mercedes-Benz vehicles.
• Elring 690.000 - Engine Intake Manifold Gasket is an exceptional replacement component designed to optimize the performance of your Jaguar or Land Rover vehicle.

Brands

• Elring

Fault Codes:

P0087 (fuel pressure too low), P0230 (fuel pump primary circuit fault), P0627 (open control circuit). These appear when the pump cannot supply proper fuel pressure or when the control circuit isn’t responding.

Why it happens:

Internal pump motor wear, a failing pump relay, or poor electrical connections reduce fuel delivery to the engine.

Symptoms:

• Engine no-start: The engine can’t run without proper fuel pressure.
• Stalling under load: Fuel supply drops when the engine demands more power.
• Poor acceleration: Low pressure prevents the engine from producing full power.
• Long crank times & CEL: Slow pressure buildup triggers extended cranking and fault codes.

Parts to Replace

• Delphi FG2186 - Fuel Pump Module Assembly is designed to meet or exceed OEM standards, offering a premium-grade solution for your Land Rover vehicle.

Brands

• Delphi

Fault Codes:

P0130, P0134, P0136 - These indicate the sensor is not responding, reading incorrectly, or failing to monitor oxygen levels properly.

Why it happens:

Exhaust contamination, carbon buildup, or heater circuit faults reduce the sensor’s ability to measure air-fuel ratio accurately.

Symptoms:

• Poor MPG: Incorrect readings cause inefficient fuel mixture adjustments.
• CEL with rich/lean codes: The ECU detects unstable or incorrect oxygen data.
• Rough idle: Faulty feedback creates inconsistent combustion at low speeds.

Parts to Replace

• NTK 25749 - Oxygen Sensor is engineered to meet or exceed OEM standards, providing exceptional performance and reliability for your Jaguar or Land Rover vehicle.
• Denso 234-5153 - Air / Fuel Ratio Sensor a premium-grade replacement part engineered to meet or exceed OEM standards.

Brands

• NTK
• Denso

Fault Codes:

P0100, P0101 - These appear when airflow readings are out of range or inconsistent.

Why it happens:

Dirt, oil, or debris contaminates the sensor element, preventing accurate airflow measurement.

Symptoms:

• Engine hesitation: Incorrect airflow data disrupts throttle response.
• Black smoke from exhaust: A rich mixture results from miscalculated airflow.
• CEL illumination: The ECU detects unstable or incorrect airflow values.

Parts to Replace

• Bosch 0280218396 - Mass Air Flow Sensor is engineered to deliver exceptional performance for your Land Rover.

Brands

• Bosch

Fault Codes:

P250C (sensor circuit low), P250F (coolant level too low). These codes trigger when the sensor reports incorrect or inconsistent coolant level data.

Why it happens:

A stuck float, internal sensor failure, electrical short, or corrosion disrupts accurate coolant level readings.

Symptoms:

• False low coolant warnings: The sensor sends incorrect signals to the dashboard.
• Warning light illumination: The system believes coolant is low even when it’s not.
• Intermittent overheating alerts & CEL: Faulty readings confuse the cooling system’s monitoring logic.

Parts to Replace

• NTK EE0010 - Engine Coolant Level Sensor is a high-quality replacement designed specifically for Jaguar and Land Rover vehicles.

Brands

• NTK

Fault Codes:

U0418 (invalid AWD module data), P1889 (Haldex pump performance issue), C1A13 (communication/ride height fault affecting AWD). These often show up when fluid level or pump performance drops.

Why it happens:

Leaks or overdue service reduce fluid inside the AWD coupling (Haldex unit), limiting proper clutch engagement for torque distribution.

Symptoms:

• Drivetrain warning light: The system detects reduced pump pressure or engagement.
• Reduced AWD performance: The rear wheels receive less torque when needed.
• Front-wheel-only traction: AWD disengages when fluid is too low for operation.
• Unusual noise during turns: Dry clutch packs produce noise when fluid is insufficient.

Parts to Replace

• Rein FLDF003 - AWD Coupling Fluid is engineered to provide exceptional performance and protection for your vehicle's all-wheel drive (AWD) system.
• Febi-Bilstein 101172 - AWD Coupling Fluid is specifically formulated to ensure optimal performance and longevity of your all-wheel-drive system.

Brands

• Rein
• Febi-Bilstein

Fault Codes:

B10A9, B10B9, U0424 - These may appear when the climate control module detects compressor performance issues or communication faults.

Why it happens:

Internal seal wear, clutch failure, or contaminated refrigerant prevents the compressor from maintaining pressure or causes it to seize.

Symptoms:

• No cold air from vents: The compressor can’t circulate refrigerant effectively.
• Clicking or knocking sounds: Failing internal components make noise during operation.
• Intermittent warm air: A weak compressor struggles to maintain steady cooling.
• HVAC warning or fault codes: The system detects abnormal pressure or clutch activity.

Parts to Replace

• Nissens 890617 - A/C Compressor is specifically engineered to meet OEM standards, delivering exceptional performance and reliability for your Land Rover and Jaguar vehicles.
• MAHLE ACP 537 000P - A/C Compressor

Brands

• Nissens
• MAHLE

Fault Codes:

No direct belt codes, but accessory failure can trigger P0627 (fuel pump control circuit) or P0562 (low system voltage).

Why it happens:

Age, heat, and tensioner wear cause the belt to crack, glaze, slip, or break, reducing accessory drive function.

Symptoms:

• Squealing noise: A slipping belt makes high-pitched noise on startup or acceleration.
• Loss of power steering: The steering pump stops turning when the belt slips or breaks.
• Battery charging issues: The alternator can’t generate power without the belt.
• Engine overheating: If the water pump is belt-driven, coolant circulation is affected.

Parts to Replace

• Gates K060763 - Serpentine Belt is the ultimate replacement solution for your Jaguar or Land Rover.
• Gates T36780 - Accessory Drive Belt Idler Pulley is a crucial component for maintaining the efficiency of your Land Rover's engine system.

Brands

• Gates

Fault Codes:

P2402 (control circuit high), P2400 (control circuit fault), P0442 (small EVAP leak). These appear when the pump can’t build pressure or communicate correctly.

Why it happens:

Electrical failure, pump motor wear, or fuel vapor intrusion prevents the pump from properly checking the EVAP system for leaks.

Symptoms:

• Check engine light: The ECU detects a fault in the EVAP monitoring system.
• EVAP readiness monitor failure: The vehicle cannot complete its emissions test sequence.
• Fuel vapor odor: Leaks or pump failure allow vapors to escape.
• Failed emissions test: The system cannot verify leak integrity.

Parts to Replace

• Bosch 0261222022 - Evaporative Emissions System Leak Detection Pump is engineered to meet OEM standards, ensuring superior quality and reliability for your Land Rover and Volvo vehicles.

Brands

• Bosch