Powertrain
generic / SAE
P0390
Camshaft Position Sensor B Circuit (Bank 2)
A general electrical fault on camshaft position sensor B (typically the exhaust cam) on bank 2 — open, shorted, or out of plausibility. Required for variable valve timing on the exhaust cam.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 90
Possible causes
- Sensor failed high
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–500 €
- Estimated time: 0.5–2.5 h
- Component: camshaft position sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012