P0340 — Camshaft Position Sensor Circuit Malfunction (Bank 1)
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1 source
- Official data (NHTSA)official_feed
What P0340 means
Avoid long trips
Same fault family as P0335, but for the camshaft position (CMP) sensor — usually less critical to starting than a CKP failure.
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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- Failed camshaft position sensor
- Faulty CMP sensor or its wiring
- Timing chain stretch (EA888 early generation)
Symptoms
- Rattling noise on cold start
- Hard starting
- Повышенный расход топлива
- Hard starting or extended cranking
- No-start condition
- Engine stalling
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