P0335 — Crankshaft Position Sensor “A” Circuit
Short answer: P0335 (crankshaft position sensor circuit) can cause no-start, stalling, or sudden power loss. Treat severe drivability or stall risk as Red—stop when safe. Do not keep driving if the engine may stall in traffic.
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Can I keep driving?
Lead message: this code can leave you stranded. Treat it as urgent even if the car is running right now.
| Color | When it applies |
|---|---|
| Green | Not the default guidance for P0335. |
| Yellow | The code is intermittent, the engine is running smoothly right now, and you can drive directly to a shop. Be aware the engine may stall or fail to restart without much warning. |
| Red — stop when safe | No-start; stall while driving; repeated cut-outs; overheating; smoke; or brake / ABS / airbag / steering-assist warnings. Prefer a tow if stall risk is high — especially in traffic. |
What P0335 means
P0335 means the computer is not receiving a valid crankshaft position sensor “A” circuit signal. Crankshaft position is fundamental for spark and fuel timing and, on many vehicles, for starting at all.
The fault may be the sensor, the wiring, the connector, the tone ring / reluctor, power or ground supply, or (less often) the control module. A circuit code is not automatic proof that the sensor itself is bad.
Intermittent P0335 after heat soak is a known real-world pattern on some vehicles — still a shop diagnosis, not a DIY certainty from this page.
Common causes
- Faulty crankshaft position sensor
- Damaged wiring or connectors (heat, oil, chafing, corrosion)
- Reluctor wheel / tone-ring damage or debris issues
- Poor power supply or ground to the sensor circuit
- Intermittent open/short that appears when hot
- Control-module problems — last-resort territory after circuit verification
When to see a technician
Have the vehicle diagnosed soon, and strongly consider towing if the engine has already stalled or struggles to stay running. Scope or detailed circuit testing may be required. This page does not provide wiring diagrams, pinouts, or a promised fix.
Related codes
- Camshaft sensor codes (for example P0340) may be covered in related guides on this site
- P0300 — misfire (different problem; do not conflate without a scan)
FAQ
Can I drive with a P0335 code?
Only with caution. If the engine may stall, will not start reliably, or runs poorly, stop when safe and arrange a tow. Do not risk stalling in traffic.
What does P0335 mean?
P0335 points to a problem in the crankshaft position sensor “A” circuit—sensor, wiring, or related signal path—not a guaranteed bad sensor alone.
Is P0335 serious?
It can be. Crank signal issues affect spark/fuel timing and may cause stall or no-start. Get a proper diagnosis soon.
Page disclaimer
Not certified repair advice. This page explains a generic OBD-II code in plain English and a cautious “can I keep driving?” guide. It does not diagnose your exact vehicle and does not guarantee any repair. If the light is flashing, the engine overheats, or you have brake, steering, airbag, or severe drivability problems, stop when safe and get professional help. Details are rewritten from public DTC definitions—confirm with a scanner and a qualified technician.