P0335 on a BMW: Causes, Fixes & Repair Cost

⚠️ Severe · not recommended to drive

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

What P0335 means on a BMW

On a BMW, P0335 means the engine computer isn't receiving the crankshaft position signal it needs to fire the ignition. The engine may crank but not start, which is a classic symptom of a failed BMW crankshaft sensor.

Is P0335 common on BMWs?

BMW crankshaft position sensors fail with age and heat, and this code is common on higher-mileage 3 Series and 5 Series models. The sensor sits near the crankshaft and can be tight to reach, so many owners have a shop do the job.

Commonly reported on: 3 Series, 5 Series, X3, X5.

Symptoms

Engine cranks but won't start
Engine stalls while driving
Check engine light is on
No spark reaching the spark plugs

Common causes

most common: Failed crankshaft position sensor
common: Heat and age damage to the sensor wiring
common: Loose or corroded sensor connector
less common: Damaged trigger wheel or reluctor teeth

How to fix it

Fix	DIY?	Typical cost
Replace the crankshaft position sensor	Yes	$60–220
Repair damaged wiring or the sensor connector	Yes	$20–150
Have a shop replace the sensor with labor	Mechanic	$180–450