P0399
PowertrainCrankshaft Camshaft Positionmoderate severityCamshaft Position Sensor B Circuit Intermittent (Bank 2)
What P0399 Means
The camshaft position sensor B on Bank 2 gives an intermittent or erratic signal. Symptoms may be sporadic and hard to reproduce.
Symptoms
- Intermittent MIL
- Occasional stalling
- Random hesitation
Common Causes
- Loose or corroded connector
- Chafed or damaged wiring
- Faulty camshaft position sensor
- Loose sensor mounting
Diagnostic Steps
- Retrieve stored/pending codes
- Wiggle-test wiring during monitoring
- Inspect connector and mounting torque
- Repair harness or replace sensor
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