Vauxhall P0341

Camshaft position sensor 'A' range/performance on Vauxhall — sensor failures on Z16/A16 petrol, chain stretch on 1.4T.

Vauxhall P0341 — Camshaft position sensor 'A' range/performance on Vauxhall — sensor failures on Z16/A16 petrol, chain stretch on 1.4T. Typical UK independent garage cost: £50–£2400.

What actually causes P0341 on a Vauxhall

Vauxhall A14NET 1.4 turbo engines suffer well-known timing chain stretch — P0341 often stores alongside P0016 as the first symptom, well before catastrophic failure. On 1.6 petrol (Z16XER/A16XER) it's usually a genuine sensor failure (£40 fix). On CDTi diesels, sensor wiring is the common cause.

Vauxhall engines that log P0341

• 1.4 Turbo A14NET (Astra J, Insignia, Corsa)
• 1.6 Z16XER / A16XER (Astra H/J)
• 1.7 CDTi (Astra, Zafira)
• 2.0 CDTi (Insignia)

How we diagnose P0341 on a Vauxhall

1. On A14NET, listen for chain rattle — well-known fault, often paired with P0341/P0016
2. TECH2/GDS2: read cam timing deviation
3. Test cam sensor signal and inspect harness
4. On 1.6 petrol, check oil level and condition — sludge kills sensors slowly
5. Replace sensor as a last step on A14NET — never first

The common misdiagnosis to avoid

Don't fit a £40 sensor to a 1.4 Turbo Astra with chain rattle — the chain replacement is £1,800+ and ignoring it leads to a bent valve job.

Vauxhall P0341 repair cost in the UK

Expect £50–£2400 including parts and labour at an independent garage. Main-dealer quotes on Vauxhall 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

Vauxhall A14NET chain failures are so common that buying a used Astra/Corsa with one without proof of chain replacement is a risk — budget £1,800 immediately if no history.

Codes usually seen alongside P0341 on Vauxhall

• P0016
• P0017
• P0340

Symptoms drivers report with P0341

• Engine cranks noticeably longer than usual before catching — especially hot restarts after a shop stop
• Loud metallic rattle for the first 2–4 seconds of a cold start (the classic 'death rattle')
• Rough lumpy idle at traffic lights, sometimes stalls when you dip the clutch
• Turbo feels lazy or flat below 2,000 RPM — ECU has retarded timing to protect the valvetrain
• Stop/Start stops working (ECU disables it once cam adaptation drifts past spec)
• MPG drops 3–6 mpg with no other obvious cause
• P0011 / P0014 / P0016 / P0335 often stored alongside — that combination is chain, not sensor

Repairs that clear P0341

• Sensor replacement
• Timing chain inspection

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P0341 guide.

Reading P0341 on a Vauxhall properly

A generic reader will show P0341 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 Vauxhall 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 P0341 without fixing it

Erasing the code resets the Vauxhall'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 P0341 is showing on your Vauxhall, 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.