P0335 on a Mercedes-Benz: Causes, Fixes & Repair Cost

⚠️ Severe · not recommended to drive

The engine may crank without starting or stall while driving, so have the Mercedes towed to a shop.

What P0335 means on a Mercedes-Benz

On a Mercedes-Benz, P0335 means the computer lost the crankshaft position signal needed to run the engine. The car may crank without starting or stall while driving.

Is P0335 common on Mercedes-Benzs?

Mercedes crankshaft position sensors are known to fail with age, especially on higher-mileage C-Class and E-Class models. Heat from the engine and normal wear are the usual culprits; the sensor must be replaced to restore the signal.

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

Symptoms

Engine cranks but won't start
Engine stalls while driving
Check engine light is on
No spark from the ignition system

Common causes

most common: Failed crankshaft position sensor
common: Heat damage to the sensor from normal engine use
common: Damaged wiring or connector near the sensor
less common: Loose sensor mounting changing the gap

How to fix it

Fix	DIY?	Typical cost
Replace the crankshaft position sensor	Yes	$70–240
Repair damaged wiring or the sensor connector	Yes	$20–150
Have a shop replace the sensor including labor	Mechanic	$200–480