P0340 on Volkswagen — Camshaft position sensor 'A' circuit (Bank 1)
VOLKSWAGEN
Reviewed2 sources
2 sources
- Official data (NHTSA)official_feed
- Editorial sourceeditorial
What P0340 means
Avoid long trips
P0340 means the engine control module has lost or cannot correlate the camshaft position signal. On VW engines the usual causes are a failed camshaft position sensor or its wiring; on higher-mileage EA888 engines a stretched timing chain can shift cam timing enough to set this code.
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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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