P06D9
Sensor Reference Voltage F Circuit Range/Performance
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
- Faulty sensor reference voltage (5V) circuit
- Loose or corroded connections in the sensor reference voltage circuit
- Short circuit or open circuit in the sensor reference voltage circuit
- Malfunctioning engine control module (ECM)
- Faulty sensor that is connected to the sensor reference voltage circuit
How to diagnose & fix
Work through it in order
- Check engine light illuminates on the dashboard
- Engine may exhibit poor performance or may hesitate while accelerating
- Vehicle may experience stalling or intermittent starting issues
- Decreased fuel efficiency or increased fuel consumption
- Faulty sensor readings may cause the vehicle to run rough or misfire
Read & clear P06D9 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.