Code P0335 reports a problem in the crankshaft position sensor circuit, the one that tells the control unit engine speed and phase. If it fails the car may not start or may stall.
What code P0335 means
Crankshaft position sensor circuit (engine speed sensor).
Typical symptoms
- Car does not start although the starter turns
- Sudden stalling, even when warm
- Intermittent starting
- Rev counter drops to zero
- Check engine light on
Most likely causes
| Cause | How common | What to do |
|---|---|---|
| Faulty or dirty speed sensor | Very common | Replace the sensor |
| Damaged wiring or connector | Common | Repair the wiring |
| Damaged or dirty reluctor ring | Less common | Check and replace |
| Weak battery or low voltage | Less common | Check battery and alternator |
| Control unit | Rare | Check and repair |
How it is diagnosed
- Read the speed signal during cranking.
- Check connector and wiring.
- Check air gap and reluctor ring.
- Check battery voltage and grounds.
Can you drive with code P0335?
It is not recommended: the fault can make the engine stall while driving. If it appears and the car is still drivable, have it checked right away.
How much does it cost to fix?
| Work | Indicative cost |
|---|---|
| Crankshaft sensor | €60-200 |
| Wiring / connector repair | €50-250 |
| Diagnosis | €50-120 |
Figures are indicative market ranges, useful for orientation: the real cost depends on model, engine, parts chosen and labour hours. For an exact quote we need the vehicle registration number.
How MasterTuning helps
We read the real values of the control unit, not just the code: that is the difference between finding the faulty component and replacing parts by trial and error. After the repair we clear the error and check that it does not come back. Find the nearest centre or contact us.
Got code P0335 on your car? Book a diagnosis at the nearest MasterTuning centre.
Frequently asked questions
What does P0335 mean?
That the crankshaft position sensor circuit has a fault or an invalid signal.
Does P0335 stop the car from starting?
Yes, it can prevent starting or make the engine stall, because the control unit does not know engine speed.
Is it always the sensor?
No: it can be the wiring, the connector or the reluctor ring. Diagnosis tells them apart.
How much does it cost to fix P0335?
From €60-200 for the sensor to €50-250 for wiring repair.
