Sensor Power Supply B Circuit High

Where it lives

For P06B5, the sensor sits on the circuit this code reports. The description of P06B5 reports a fault at the sensor.

Check these first

• A short to voltage in the sensor power B circuit
• A faulty ECM regulator
• A sensor drawing too much current
• Corroded supply B wiring
• A charging system overvoltage

What to do next

1. Monitor the sensor power B voltage live
2. Check for a short to power
3. Unplug sensors on supply B one at a time
4. Check the charging system
5. Repair the wiring or replace the ECM
6. Clear the code and retest

Look up another code