P06D8
Sensor Reference Voltage F Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace the sensor reference voltage F circuit
- Inspect and repair any damaged wiring or connectors related to the sensor reference voltage F circuit
- Clear the error codes and monitor if the error code reoccurs.
Common causes
Most likely first
- Short circuit in the wiring or connectors related to the sensor reference voltage
- Loose or corroded electrical connections in the sensor reference voltage circuit
- Defective engine control module (ECM) or powertrain control module (PCM)
- Faulty sensor causing a high voltage reading on the sensor reference voltage circuit
How to diagnose & fix
Work through it in order
- Check engine light illuminates on the dashboard
- Engine may hesitate or stumble during acceleration
- Vehicle may experience a decrease in fuel efficiency
- Rough idling or engine misfires occur
- Vehicle may fail emissions test
Read & clear P06D8 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.