KNOWN FAULTS · Volkswagen

Known faults for the Volkswagen Eos.

2006–2015 · Petrol / Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

5 known faults with sources

Engines: 1.4 TSI (EA111) (Petrol)

EA111 TSI chain and tensionerTiming system

Engine / equipment: 1.2 / 1.4 TSI-TFSI EA111 (Polo, Golf V/VI, Ibiza, Fabia, Octavia, Audi A1, Yeti, Touran…)
Period mentioned: 2006–2014
Symptoms: Rattle on a cold start, engine light for timing deviation; if the chain jumps, the engine cranks but won't start.
Possible cause described: A narrow chain and a hydraulic tensioner that loses pressure: the chain stretches, often between 60,000 and 100,000 km. VW revised the chain, guides, tensioner and camshaft.
Check for the garage: Listen to a cold start and read the timing deviation values with VCDS. Ask for an invoice showing the revised kit was fitted.
Cost cited in the source: €800–1,500A rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: 60,000–100,000 km. This is not a maintenance interval and does not predict a failure.

Engines: 1.4 TSI (EA111) (Petrol) · 2.0 FSI / TFSI (Petrol) · 2.0 TDI (Diesel)

Applies if: Only if fitted with the air conditioning system described.

A/C not cooling: N280 valveClimate control

Engine / equipment: Air conditioning with clutchless compressor and N280 regulating valve (combustion VW, Audi, Seat, Cupra and Skoda from 2006)
Period mentioned: 2006–2026
Symptoms: The air does not cool or cools intermittently (for example only at motorway speed), and sometimes the compressor rattles with the A/C on. Codes 01232 (N280 valve), P2612 or 00898.
Possible cause described: The compressor regulates its output with the N280 solenoid valve, its most common failure point. Audi issued technical bulletins over a manufacturing fault in this valve on Sanden compressors. Its connector can also become brittle and corrode (especially without the engine undertray), or the wiring fails.
Check for the garage: Read the codes and N280 control current with VCDS or ODIS, measure its resistance (about 10 ohms) and check the connector and wiring before replacing parts. If the valve or compressor is replaced, the whole circuit must be flushed.
Cost cited in the source: N280 valve: a cheap part (about 30 dollars) where sold separately; new compressor with circuit flush: considerably moreA rough figure from the original database, not an up-to-date quote.

Engines: 2.0 FSI / TFSI (Petrol)

2.0 TFSI EA113 high-pressure pump followerInjection / high-pressure pump

Engine / equipment: 2.0 TFSI EA113 (Golf V GTI, A3/S3 8P, A4 B7, TT 8J, Leon Cupra, Octavia RS, Passat B6, Eos)
Period mentioned: 2004–2013
Symptoms: Power loss or hesitation at full load, fuel pressure codes, high-pressure pump noise; fuel smell in the oil and a rising level if the pump leaks; misfires.
Possible cause described: A follower between the camshaft and the high-pressure fuel pump wears through and damages the cam lobe and the pump; Audi hardened the cam in 2006. The pump can leak fuel into the oil. There is also carbon build-up on the intake valves and coil pack failures.
Check for the garage: Check the high-pressure pump follower at every service, smell the oil and watch its level, and read fuel pressure with a diagnostic tool.
Cost cited in the source: Follower: approx. €250–900 depending on damage; far more if the camshaft or pump is damagedA rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: from 90,000 km. This is not a maintenance interval and does not predict a failure.

Engines: 2.0 TDI (Diesel)

Cracked EGR coolerCooling / EGR

Engine / equipment: 1.6 and 2.0 TDI (EA189 and EA288)
Period mentioned: Approx. 2010–2020
Symptoms: Coolant level drops with no visible leak, white smoke with a sweet smell, rising temperature or engine light. In severe cases the engine hydrolocks.
Possible cause described: The internal tubes of the EGR cooler crack and coolant enters the intake. It worsened after the post-Dieselgate software update, which increased EGR use.
Check for the garage: Cooling system pressure test and check for coolant in the intake or manifold.
Cost cited in the source: €400–1,300A rough figure from the original database, not an up-to-date quote.

Engines: 2.0 TDI (Diesel)

Applies if: Only if fitted with the 6-speed DQ250 DSG. Confirm the gearbox type.

DQ250 DSG mechatronic and oilDSG gearbox

Engine / equipment: DQ250 6-speed wet-clutch DSG (2.0 TDI, 2.0 TSI and other powerful engines in the Golf, Passat, Tiguan, A3, TT, Octavia, Superb, Leon…)
Period mentioned: 2003–2020
Symptoms: Jerking or shudder when pulling away and at low speed, harsh shifts, gearbox warning or limp mode; codes P17BF, P189C, P0841, P0871 or P0717.
Possible cause described: In most cases the cause is the mechatronic unit (the electro-hydraulic control unit), not the clutches. The oil shares a circuit with the clutches and degrades, carrying debris that damages the valves; the pan can also rust and leak. Volkswagen specifies an oil and filter change every 60,000 km.
Check for the garage: Read codes with ODIS or VCDS, check the oil change history, inspect the pan for rust or leaks and the clutch adaptation values. Replacing the mechatronic control board is often enough.
Cost cited in the source: Oil and filter change: maintenance every 60,000 km; control board or mechatronic: expensive repairA rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: from 60,000 km. This is not a maintenance interval and does not predict a failure.