P0390: Camshaft Position Sensor B Circuit — Bank 2
Do not keep driving
Expect a rougher idle and reduced performance. Note whether other camshaft sensor codes are stored, since the pattern across banks and sensors identifies whether the fault is shared.
What this code means
A circuit fault in the bank 2 B camshaft position sensor — normally that bank's exhaust camshaft. Completes the four camshaft sensor groups: A and B on each of two banks, twenty codes in total across P0340–P0349 and P0365–P0394.
Likely causes
Start here
- Faulty camshaft position sensor · moderate
- Corroded or loose connector · easy
- Open circuit in sensor wiring · moderate
Less common
- Low or dirty engine oil · easy
- Damaged reluctor or tone ring · specialist
Symptoms
Components involved
Information, not instruction
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Community experience
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