P0C6B
Generator Position Sensor Circuit B Low
What it means
P0C6B means Generator Position Sensor Circuit B Low.
Where it lives
For P0C6B, the sensor sits on the circuit this code reports. The description of P0C6B reports a fault at the sensor.
Check these first
- A short to ground in the generator position sensor B circuit
- A weak generator position sensor B output
- Corrosion at the sensor B connector
- A low reference voltage feeding sensor B
- Worn brushes or a bearing disturbing the sensor B signal
What to do next
- Read generator position sensor B voltage on a scan tool
- Inspect the sensor B connector and wiring
- Test the sensor B circuit for a short to ground
- Measure the sensor B output against the reference
- Replace the sensor if the output stays low
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.