P0390
Camshaft Position Sensor B Circuit
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.
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.
Common causes
- high
Sensor failed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-550
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P0390 mean?
P0390 means "Camshaft Position Sensor B Circuit (Bank 2)". It is a generic OBD-II code that points to a fault in the ignition system or misfire.
What are the most common causes of P0390?
sensor failed — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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