29 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Costly or dangerous
CP4.1 pump failure contaminates EA288 fuel system
Found with a diagnostic scan
A failed CP4.1 high-pressure pump can shed metal particles into the common rail, damaging injectors and requiring expensive replacement of the pump, injectors, and rail. This risk is specific to EA288 TDI engines with this pump and may be predictable from mileage and service history.
What to check. Check the fuel filter for metallic particles, listen for unusual pump noise, and consider a fuel sample analysis. Look for DTC P0087 or related fuel pressure codes in the ECU.
The high-pressure fuel pump's flow control valve can fail electrically or mechanically, causing fuel pressure issues and potentially expensive pump replacement. This is a known EA288-specific failure that a standard inspection cannot always detect.
What to check. Use diagnostic tooling (ODIS) to run the flow control valve actuator test; check for DTC P0087 (fuel pressure) and inspect for mechanical 'no stroke' response.
The EA288 diesel engine's diesel particulate filter (DPF) is highly sensitive to fuel quality, which can lead to frequent clogging. This is a chronic issue that requires expensive replacement. Buyers should be aware of this risk when considering a car with this engine.
What to check. Check for DPF fault codes (e.g., P2002, P242F) with OBD scanner. Look for excessive soot in tailpipe, ask about fuel quality history and DPF maintenance/replacement.
The diesel particulate filter (DPF) traps soot from exhaust. In 1.6 TDI EA288 engines, it can clog if the car mostly does short trips or has poor maintenance. This causes loss of power, warning lights, and very costly replacement. It is a specific risk for these engines that a normal inspection may not catch.
What to check. At viewing, use an OBD scanner to check DPF soot load and ask if the DPF has ever been regenerated or replaced. Look for recent service records indicating DPF maintenance. Prefer cars that have regular highway driving rather than city-only use.
The 2.0 TDI engines frequently experience DPF clogging due to soot buildup, exacerbated by short trips and high RPM conditions. This leads to restricted exhaust flow, amber warning lights, and reduced engine performance. Sensor failures also contribute to DPF-related issues.
What to check. Look for black smoke from the exhaust, check for amber warning lights, and monitor engine performance drops. Inspect DPF cleaning history—frequent clogs may indicate a chronic issue. Verify driving habits (e.g., frequent short trips).
The diesel particulate filter (DPF) traps soot, but must get very hot to burn it off. On short city trips it never heats up enough, so the filter fills with soot, causing power loss, stalling, and expensive filter replacement. This is a known issue on this engine if most driving is short distance.
What to check. Check for DPF warning light, ask about typical driving routes, and consider a diagnostic scan to check soot load and regeneration history. Look for evidence of prior DPF replacement or cleaning in service records.
EA288 1.6 TDI turbo bearing failure from oil coking
Found with a diagnostic scan
This specific EA288 diesel can suffer turbocharger bearing damage after about 150,000 km due to oil coking and heat. The repair is very expensive because it requires removing the axle and DPF, and delay can destroy the DPF. A buyer should listen for whistling and check for power loss during a test drive.
What to check. During test drive, listen for turbo whistling/wailing and sudden power loss. Check service history for regular oil changes; after 150,000 km budget for possible turbo/DPF replacement. Scan for fault code P0299.
EA288 1.6 TDI turbocharger whistle and bearing failure
Found with a diagnostic scan
The turbocharger in this engine can develop a whistling noise from worn bearings or a damaged turbine. This often leads to reduced power and poor fuel economy, and replacement is expensive. Buyers should listen for unusual turbo noises on a test drive.
What to check. During test drive, listen for a high-pitched whistle from the turbo under acceleration or at idle. Check for oil residue in intercooler piping and look for evidence of oil leaks near the turbo. Review service history for regular oil changes.
The EA288 diesel engine uses a Bosch CP4.1 high-pressure fuel pump that is lubricated by the fuel. If fuel filters are not replaced on schedule, contaminants can cause premature pump wear. A failed pump causes loss of power under acceleration and is expensive to replace.
What to check. Verify fuel filter service history in the maintenance log. If history is missing, have a specialist perform a fuel pressure test under load and inspect the filter for debris.
EA288 CP4.1 pump failure risk from overdue fuel filter changes
Found with a diagnostic scan
The CP4.1 high-pressure fuel pump on EA288 TDI engines can fail if the fuel filter isn't changed every 60,000 km as recommended. Contaminants and poor fuel quality accelerate wear, so a neglected filter can lead to an expensive pump replacement. Unless previous service records prove the filter was changed, a buyer should assume it is overdue and budget for its replacement.
What to check. Check service history for fuel filter replacements at 60,000 km or less. Ask about fuel quality and refueling habits. Look for any stored fault codes related to fuel pressure (e.g., P0087). If the car is high mileage without records, factor a filter change and possibly a fuel pump inspection into the price.
Some 1.6 TDI engines with the CRKB code use Continental injectors that often fail between 50,000 and 100,000 km, sometimes right after a Dieselgate software update. Symptoms include heavy shaking, cylinder misfires, and hard cold starts. Repair costs are high, and VW goodwill depends on full service history.
What to check. At viewing, start the engine cold and listen for uneven idle or misfires. Check service history for any injector replacements or goodwill work. If possible, read fault codes for cylinder-specific misfires (e.g., P0300-P0304) and fuel injection faults. Given the known pattern, budget for injector replacement if the car has >80,000 km and no proof of replacement.
EA288 Idle Fluctuations from Flywheel Wear or Fuel Rail Sensor
The EA288 diesel engine can develop unstable idle speed due to two common causes: a failing fuel rail pressure sensor or a worn dual-mass flywheel. A worn flywheel is expensive to replace and can cause shuddering or rattling. This issue is specific to EA288 and predictable with age/mileage, making it a useful risk to know before buying.
What to check. At viewing, let the engine idle warm and watch the tachometer for fluctuations. Listen for rattling or knocking from the gearbox area (flywheel side). A diagnostic scan may show fuel rail pressure sensor fault codes (e.g., P0087).
EA288 TDI coolant pump failure can overheat engine
Found by looking
The EA288 engine has an electric coolant pump controlled by the N499 sensor. A design flaw can block water flow, causing the engine to overheat. This can damage the engine and the pump may need frequent replacement.
What to check. Check coolant level and condition for degraded antifreeze. During test drive, watch the temperature gauge for overheating. Ask service history for coolant pump replacement.
Early EA288 TDI engines (late 2012–early 2013) were built with defective turbochargers that can vibrate and whine. This can lead to premature turbo failure and an expensive replacement. Buyers of these specific model years should check for unusual turbo noises.
What to check. During a test drive, accelerate at mid-to-high RPM and listen for whining or rattling from the engine bay. Also check service records for turbo replacement on early 2012–2013 EA288 TDI models.
The EA288 2.0 TDI engine may develop wear in the balancing shaft and chain tensioner, causing rattling noises and vibrations. If untreated, the timing chain can jump, leading to severe engine damage. This is a known issue that increases with age and mileage.
What to check. At viewing, start the engine from cold and listen for a rattling noise from the timing chain area. Check if the chain tensioner has been replaced or if the timing chain service is documented. Use VCDS to check timing chain stretch adaptation values if possible.
Early EA288 2.0 TDI engines built before week 36 of 2014 can have the coolant pump seize without warning, leading to overheating and possible engine damage. This is a known defect with a specific production window and costly replacement.
What to check. Check the car's production date (before week 36/2014), verify any completed recall/TPI, inspect coolant level and leaks, and listen for unusual noises from the pump.
EA288 water pump control slide failure causes overheating
Found by looking
Early EA288 1.6 TDI engines (before September 2014) can have a faulty water pump control slide. This can make the coolant temperature spike to 130°C and force the engine to shut down to protect itself. It's a known issue tied to the engine code and production date.
What to check. Check the vehicle's production date or engine code (CRKB). At viewing, watch for coolant temperature reaching abnormally high values during a test drive. Ask for service records showing water pump replacement, and inspect for any coolant leaks or warning lights.
The EA288 engine uses a toothed belt that runs in engine oil, not a metal chain. This belt must be replaced at a set mileage (120,000–150,000 km), but many owners skip it. If the belt fails, the engine can be severely damaged, costing thousands to repair.
What to check. Ask to see service records proving the timing belt was replaced at the specified interval. If the car is near or past 120,000 km and there's no proof, assume it's due at your expense. Listen for unusual noise or check for oil leaks, but the belt itself is not visible without disassembly.
Fuel injector clogging/gasket failures in EA288 2.0 TDI
Found with a diagnostic scan
The 2.0 TDI diesel engine family, which includes the EA288, has a known chronic issue where fuel injectors clog or leak due to gasket failure. This can cause misfires, rough idling, loss of power, and poor fuel economy. Replacing injectors is costly, so these symptoms matter to a buyer.
What to check. Ask if injectors have been replaced and check service records. During a test drive, feel for rough idle or hesitation. If possible, run an OBD scan for misfire codes (e.g., P0200–P0299 range) and look at injector correction values. Also sniff under the hood for diesel fuel odor and inspect the injector area for wetness or soot.
The high-pressure fuel pump on the 1.6 TDI (EA288) engine can fail without warning, causing the car to stall or not start. This is a costly repair and can be triggered by contamination or a clogged fuel filter. Look for evidence of regular fuel filter changes and avoid cars with a history of stalling.
What to check. At viewing, check for a log of fuel filter changes, and test the car from cold start. If possible, have a professional check fuel pressure with a diagnostic tool. DTC codes like P0087 or P0191 may indicate fuel pressure issues.
Chronic failure of Siemens injectors (2009–2013 models) due to defective insulation, leading to fuel delivery issues, misfires, and long-term engine damage.
What to check. Check for misfires, poor acceleration, or fuel leaks around injector locations. Verify if the vehicle falls within the 2009–2013 production range for Siemens injectors.
The timing belt tensioner can fail early due to material flaws, causing the belt to slip and pistons to hit valves, destroying the engine. This is a known defect on the 2.0 TDI EA288 engine. A buyer should ask about timing belt service history and have the tensioner inspected by a specialist.
What to check. Ask for proof of timing belt and tensioner replacement per VW schedule. Have a specialist inspect the tensioner for play, noise, or wear; note mileage and age—if near service interval, assume it needs replacement unless documented.
Reported instances of turbocharger failures in 1.6 TDI engines, leading to loss of power, increased emissions, and check engine light activation. This suggests a systemic weakness in turbo design or build quality.
What to check. Listen for unusual whining or rattling noises from the turbo area. Check for oil leaks around the turbocharger housing, which may indicate internal failure or seal issues.
Volkswagen's 1.6 TDI diesel engines are prone to carbon buildup in the EGR valve. This can cause rough idling, stalling, and reduced performance. It's a predictable issue that may show up as the car ages and is not easily spotted in a standard inspection.
What to check. Check for rough idle or stalling during test drive. Look for fault codes P0401 or P0403. If available, request an EGR operation test or check for excessive carbon deposits in the EGR valve intake.
Carbon Buildup in Combustion Chamber/Intake Valves
Shown by the service history
Chronic carbon buildup in the combustion chamber, intake valves, and pistons due to inefficient combustion, leading to reduced performance, fuel efficiency, and starting issues.
What to check. Check for symptoms like rough idling, power loss, or difficulty starting. Inspect intake valves and combustion chamber for excessive carbon deposits during maintenance.
EA288 diesel engines are prone to carbon buildup in the EGR valve and pipes, which restricts exhaust gas recirculation and triggers a check engine light. This is a known issue that can cause performance problems and may require costly cleaning or replacement.
What to check. Use an OBD scanner to check for EGR-related fault codes like P0401, and ask for maintenance history regarding EGR cleaning. A high-idle or rough idle might indicate a clogged EGR.
The EA288 diesel engine has a known issue where the EGR cooler becomes blocked with soot over time. This can trigger the engine warning light, reduce performance, and lead to expensive repairs. The problem becomes more likely as mileage increases.
What to check. At viewing, use an OBD-II scanner to check for fault code P0401. Ask for service history regarding EGR cooler cleaning or replacement. If possible, have a mechanic inspect the EGR circuit for excessive soot.
The EGR valve inside EA288 engines contains a small gear (V399) that can break, even at low mileage. When it fails, the EGR valve stops working correctly, causing engine warning lights and reduced performance. Replacing the EGR valve is a relatively costly repair.
What to check. During a viewing, ask for a diagnostic scan to check for EGR-related fault codes (e.g. P0401 or specific V399). Look for any history of EGR valve replacement. A visual inspection won't reveal internal gear wear, so a scan is essential.
Chronic failure of glow plugs, particularly in cold weather, leading to prolonged cranking times, difficulty starting, and reduced engine performance. This is exacerbated by faulty glow plug control systems.
What to check. Test glow plugs for functionality (resistance check) and inspect for signs of prolonged cranking or failure to start in cold conditions. Check glow plug relay and wiring for faults.
These reports come from the pages linked under each item: owner forums, repair guides and workshops. They are not a diagnosis of any one unit, and a careful check of the one you are buying still applies.
Text from the Kriko Cars catalog, version 0.1.4, under the CC-BY-SA-4.0 license.
