P0335
Crankshaft Position Sensor Circuit Malfunction
high
i Description
The Crankshaft Position (CKP) sensor circuit has a malfunction. The CKP sensor tells the ECU the exact position and rotational speed of the crankshaft, which is essential for ignition timing and fuel injection timing.
? Common Causes
- Faulty CKP sensor
- Damaged reluctor ring (trigger wheel)
- Wiring fault
- Excessive sensor-to-reluctor gap
- Corroded connector
! Symptoms
- Check engine light
- Engine stalling or no-start
- Intermittent engine cut-out
- Rough running
- Hard starting
# Diagnostic Steps
- Check CKP sensor connector
- Test sensor resistance and AC voltage output while cranking
- Inspect reluctor ring for damaged or missing teeth
- Check wiring between sensor and ECU
- Verify sensor air gap
⚙ Typical Fix
Replace the crankshaft position sensor.
Parts Needed
Crankshaft position sensor
Estimated Cost
$100-$400
↔ Related Codes
Q Frequently Asked Questions
The car may stall without warning or refuse to start. If you can start it, drive directly to a mechanic. Do not rely on this vehicle for essential trips until fixed.
On many vehicles, the CKP sensor is accessible near the bottom of the engine block. It is a single-bolt replacement. On some vehicles it is harder to reach.
CKP sensor: $30-$100. Labour: $50-$200 depending on location.
☞ Learn More
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