Volkswagen P0301

Cylinder 1 misfire on VW — coil pack failure on TSI is the headline cause, carbon build-up on higher-mileage cars.

Volkswagen P0301 — Cylinder 1 misfire on VW — coil pack failure on TSI is the headline cause, carbon build-up on higher-mileage cars. Typical UK independent garage cost: £50–£480.

What actually causes P0301 on a Volkswagen

VW TSI coil packs fail one at a time — pretty consistent across all VAG engines. P0301 with a shake at idle and cylinder-1 specific fuel trims confirms it. On higher-mileage 2.0 TSI DI engines, carbon on intake valves causes lean misfires. Coil + plug is the cheap first move.

Volkswagen engines that log P0301

• 1.4/1.8/2.0 TSI EA888
• 1.2/1.4 TSI EA111
• 1.6 FSI / MPI

How we diagnose P0301 on a Volkswagen

1. Swap coil pack cylinder 1 to another cylinder, clear and re-test
2. Check spark plug condition (NGK or VAG-spec)
3. VCDS: read misfire counter per cylinder
4. On high-mileage DI engines, plan walnut blast if misfires wander
5. Compression test if coil/plug exclude electrical cause

The common misdiagnosis to avoid

VAG coil packs are notorious — keep a spare in stock if you maintain a fleet of TSI cars. £25 part, 5-minute fix, no diagnostic needed if symptoms are textbook.

Volkswagen P0301 repair cost in the UK

Expect £50–£480 including parts and labour at an independent garage. Main-dealer quotes on Volkswagen 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

Direct-injection 2.0 TSI EA888 over 80k often benefits from a walnut blast even without codes — the carbon build-up degrades performance long before it logs a misfire.

Codes usually seen alongside P0301 on Volkswagen

• P0300
• P0302
• P0303
• P0304

Symptoms drivers report with P0301

• Engine 'juddering' like a wet dog when you try to overtake on the A9.
• The car 'kangaroos' at low speeds, especially when the engine is stone cold.
• The EML (Engine Management Light) is flashing at you—that's a 'stop now' warning for your catalytic converter.
• A distinct 'put-put-put' sound from the exhaust pipe at idle.
• Massive loss of power, feels like you're towing a caravan that isn't there.

Repairs that clear P0301

• Replace spark plug
• Swap coil pack
• Injector test
• Compression test

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P0301 guide.

Reading P0301 on a Volkswagen properly

A generic reader will show P0301 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 Volkswagen 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 P0301 without fixing it

Erasing the code resets the Volkswagen'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 P0301 is showing on your Volkswagen, 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.