P0335 on a Mazda: Causes, Fixes & Repair Cost

⚠️ Severe · not recommended to drive

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

What P0335 means on a Mazda

On a Mazda, P0335 says the engine computer isn't receiving the crankshaft position signal it needs to run the engine. The engine may crank without firing or stall while driving.

Is P0335 common on Mazdas?

Mazda crankshaft sensors fail with age, and this code turns up on higher-mileage Mazda3 and Mazda6 models. Wiring damage near the sensor and a worn connector are common secondary causes to check.

Commonly reported on: Mazda3, Mazda6, CX-5, CX-9.

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: Damaged wiring near the sensor
common: Worn or corroded sensor connector
less common: Loose sensor mounting changing the gap

How to fix it

Fix	DIY?	Typical cost
Replace the crankshaft position sensor	Yes	$50–180
Repair damaged wiring or the sensor connector	Yes	$20–150
Have a shop replace the sensor and clear the codes	Mechanic	$150–400