Mercedes-Benz P0341

Camshaft position sensor performance on Mercedes — M271/M272/M274 sensor failure with intermittent stall.

Mercedes-Benz P0341 — Camshaft position sensor performance on Mercedes — M271/M272/M274 sensor failure with intermittent stall. Typical UK independent garage cost: £140–£420.

What actually causes P0341 on a Mercedes-Benz

Mercedes P0341 — sensor itself fails with heat-soak. Cheap fix once you confirm the harness is intact.

Mercedes-Benz engines that log P0341

• M271 1.8 Kompressor/turbo
• M272 V6 3.0/3.5
• M274 2.0 turbo

How we diagnose P0341 on a Mercedes-Benz

1. Live cam vs crank correlation
2. Sensor signal scope test
3. Harness inspection
4. Replace sensor

The common misdiagnosis to avoid

Don't replace the cam adjuster (£600+) for P0341 — sensor first. Cam adjuster is P0011/P0014 territory.

Mercedes-Benz P0341 repair cost in the UK

Expect £140–£420 including parts and labour at an independent garage. Main-dealer quotes on Mercedes-Benz 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

Mercedes P0341 — sensor swap, 30 minutes. Don't be sold an adjuster.

Codes usually seen alongside P0341 on Mercedes-Benz

• P0340
• P0335

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.