Camshaft Position Sensor B Circuit Bank 2

Where it lives

For P0390, the circuit described runs through the sensor. The description of P0390 puts it on bank 2.

Check these first

• A failed camshaft position sensor B on bank 2
• A short or open in the sensor B bank 2 wiring
• Corrosion at the sensor B bank 2 connector
• A failed ECM sensor B input
• A damaged sensor B harness on bank 2

What to do next

1. Check the bank 2 sensor B signal on a scan tool
2. Inspect the bank 2 sensor B connector and wiring
3. Test the sensor B bank 2 circuit for an open or short
4. Measure sensor B resistance against spec
5. Replace camshaft position sensor B if the circuit tests good
6. Clear the code and retest

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