P0341 on a Mercedes-Benz: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

You can usually keep driving with P0341, but the engine may idle rough or be hard to start, so have it checked soon.

What P0341 means on a Mercedes-Benz

On a Mercedes-Benz, P0341 means the engine control module sees a camshaft position signal from bank 1 that is outside the expected range. Mercedes engines use Hall-effect cam sensors, and the signal helps time fuel injection and ignition. When the reading drifts, you may get rough running, hard starting, or reduced power.

Is P0341 common on Mercedes-Benzs?

P0341 shows up on Mercedes-Benz models with M272 and M273 V6 engines as the cam sensors age or pick up oil contamination. The same pattern appears on newer four-cylinder engines like the M270 and M274. It is more common on higher-mileage cars, and the engine usually keeps running.

Commonly reported on: C-Class, E-Class, GLK-Class, ML-Class.

Symptoms

Check engine light on
Rough idle or hesitation
Hard starting
Reduced power in some cases

Common causes

most common: Faulty camshaft position sensor on bank 1
common: Oil in the sensor connector or damaged wiring
less common: Worn timing chain components
rare: Damaged reluctor or camshaft component

How to fix it

Fix	DIY?	Typical cost
Inspect the cam sensor connector and wiring for oil or damage	Yes	$10–60
Replace the camshaft position sensor	Yes	$120–300
Have the timing chain checked if the code returns	Mechanic	$900–2500

Frequently asked questions

Can I drive my Mercedes with a P0341 code?

Usually yes for a short time, but the engine may idle rough or be hard to start. It's best to have the sensor checked soon.

Why does P0341 happen on Mercedes-Benz engines?

The most common cause is an aging camshaft position sensor. Oil seeping into the sensor connector is also common on Mercedes V6 engines and can produce the same code.

How much does it cost to fix P0341 on a Mercedes?

A cam sensor replacement usually costs $120 to $300 with parts and labor. Timing chain repairs, if needed, cost much more.