P0302 on Audi: Causes, Symptoms and Fix Cost
Quick Answer
Not safe to drive
P0302 on a Audi indicates your engine's computer has detected consistent misfires specifically in cylinder 2. This single-cylinder code narrows the problem to that cylinder's ignition coil, spark plug, fuel injector, or internal compression, making targeted diagnosis significantly easier compared to a random misfire code like P0300. VW, Audi, Skoda and SEAT apps often show this code as P030200; the last two digits are a failure-type byte.
- Severity
- High · Misfire
- Typical repair cost, all makes
- €35-€1800
Connect a standard OBD2 adapter (Bluetooth LE on iPhone) to your Audi and Skanyx tells you what P0302 means on that engine, whether it is safe to keep driving, and what the fix should cost. Free on iPhone and Android.
Get Skanyx freeWhat does P0302 mean on a Audi?
The Quick Answer above is the generic definition. What follows is the model-specific detail for the Audi models that log P0302.
Audi A4
2005-2024
The 2.0 TFSI (EA888) engine in B8 and B9 A4 models is prone to carbon buildup on intake valves due to direct injection. Cylinder 2 is commonly affected. Walnut blasting the intake ports clears the deposits, and how quickly they build up again depends on oil consumption, fuel quality and how the car is driven.
What causes P0302 on a Audi?
Beyond the generic causes listed on the main P0302 page, these are the patterns noted for Audi models:
Carbon buildup on cylinder 2 intake valve (EA888 2.0 TFSI)
: Audi A4
Ignition coil failure, especially on early B8 models
: Audi A4
How to diagnose P0302 on a Audi with OBD2
- Read freeze-frame data and note engine RPM, load, and temperature when the misfire occurred
- Swap the ignition coil from cylinder 2 to a different cylinder. Clear codes and drive. If the misfire code moves to the new cylinder, the coil is faulty
- Inspect the spark plug on cylinder 2 for wear, oil fouling, or abnormal electrode erosion. Replace if needed
- Test the fuel injector on cylinder 2 using a noid light or by listening for the click pattern with a mechanic's stethoscope
- If spark and fuel are confirmed good, perform a compression test on cylinder 2. Compare results against the manufacturer's specification and other cylinders
How much does P0302 cost to fix on a Audi? (EUR)
Estimated repair costs for P0302 in EUR, compiled across makes. Expect Audi parts and labour towards the upper end of each range.
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| Replace spark plug (cylinder 2) | €5–€25 | €30–€80 | €35–€105 | Easy |
| Replace ignition coil (cylinder 2) | €25–€120 | €30–€100 | €55–€220 | Easy |
| Replace fuel injector (cylinder 2) | €50–€200 | €60–€200 | €110–€400 | Moderate |
| Valve or head gasket repair | €150–€600 | €400–€1200 | €550–€1800 | Professional |
Prices estimated as of October 2026. Costs vary by region, vehicle, and shop.
Codes related to P0302
These codes are often seen alongside P0302 or point to related issues, on any make:
Looking for the full P0302 reference (all makes, full diagnosis flow, complete repair cost matrix)? See the main P0302 guide