P0335high severityPowertrain
Crankshaft Position Sensor A Circuit
on 2015 Kia Forte 1.8L I4 · FWD
What this code means
Malfunction in the crankshaft position (CKP) sensor circuit. The CKP sensor is critical for engine timing and operation.
Symptoms
- Check Engine Light
- No start condition
- Engine stalling
- Intermittent misfire
- Tachometer erratic or dead
Common causes
- Faulty CKP sensor
- Damaged reluctor/tone ring
- Wiring issue
- Sensor gap incorrect
- Oil contamination on sensor
Diagnostic steps
- Test CKP sensor resistance
- Check air gap
- Inspect reluctor ring for damage
- Test wiring continuity
- Scope CKP signal pattern
Repair notes
Replace CKP sensor. Check reluctor ring. CKP variation learn may be needed after replacement.
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