Audi P0302

Cylinder 2 misfire on Audi — EA888 coil pack or EA189 injector copper-washer leak.

Audi P0302 — Cylinder 2 misfire on Audi — EA888 coil pack or EA189 injector copper-washer leak. Typical UK independent garage cost: £85–£750.

What actually causes P0302 on a Audi

EA888 coil packs are a known weak point; fit OE Bosch or genuine VAG only. On 2.0 TDI EA189 a single-cylinder misfire often traces to a leaking injector copper seal causing carbon build-up around the injector tip.

Audi engines that log P0302

• 2.0 TFSI EA888 Gen2/Gen3
• 2.0 TDI EA189/EA288
• 3.0 TFSI supercharged

How we diagnose P0302 on a Audi

1. Swap coil & plug 2 ↔ 1 — does the code follow?
2. Inspect cylinder 2 injector for black soot ring (failed copper washer)
3. Read injector correction (TDI) and balance trim
4. Borescope intake valves for carbon — EA888 Gen2 is famous for this

The common misdiagnosis to avoid

Aftermarket coils marked 'OE quality' fail repeatedly on EA888 — only fit Bosch/VAG and customers thank you.

Audi P0302 repair cost in the UK

Expect £85–£750 including parts and labour at an independent garage. Main-dealer quotes on Audi are usually higher for the same job, and the spread exists because the cheap cause and the expensive cause throw the same code — pay for the diagnosis before you pay for parts.

Bob's workshop tip

EA888 misfires after a service — check the plug torque. Over-torqued plugs crack the porcelain on these engines.

Codes usually seen alongside P0302 on Audi

• P0301
• P0303
• P0304
• P0300

Symptoms drivers report with P0302

• The car feels like a 'kangaroos' when you're pulling away from traffic lights.
• A violent shudder or 'judder' specifically under heavy load, like climbing a hill in 4th gear.
• The engine light starts flashing—that's the car telling you the catalytic converter is melting.
• Lumpy idle that feels like the car is 'coughing' through the seat.
• A distinctive 'putt-putt' sound from the exhaust tailpipe when parked.

Repairs that clear P0302

• Replace plug & coil
• Injector test

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P0302 guide.

Reading P0302 on a Audi properly

A generic reader will show P0302 and nothing else. What matters is the freeze-frame data stored with it — engine speed, load, coolant temperature and fuel trims at the moment the fault was logged — plus whether any other module on the Audi has logged something at the same time. Codes rarely arrive alone, and the order they were stored in usually points at which one is the cause and which are the consequences.

Clearing P0302 without fixing it

Erasing the code resets the Audi's readiness monitors as well as the light. The fault returns on the next drive cycle if the cause is still there, and in the meantime the incomplete monitors can stop the car passing an emissions check. After a genuine repair, the car is driven until the relevant monitor completes before it is handed back.

Bob's Mechanical Repairs is an independent garage in Birnam, Dunkeld, Perthshire, with 32 years of Bob's experience on the tools. If P0302 is showing on your Audi, bring any scan results with you — we will read the live data ourselves, confirm which cause it actually is, and price the repair before any work starts.