P06D2
Sensor Reference Voltage E Circuit/Open
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace the sensor reference voltage circuit wiring if damaged or disconnected
- Inspect and replace the sensor reference voltage circuit fuse if blown
Common causes
Most likely first
- Faulty sensor reference voltage sensor
- Wiring issues or loose connections in the sensor reference voltage circuit
- Malfunctioning or damaged PCM (Powertrain Control Module)
- Low battery voltage affecting the sensor reference voltage circuit
- Corrosion or damage in the sensor reference voltage circuit.
How to diagnose & fix
Work through it in order
- Check engine light illuminates on the dashboard
- Decreased engine performance or reduced power
- Engine may stall or have difficulty starting
- Irregular or rough engine idle
- Problems with the vehicle's fuel efficiency
Read & clear P06D2 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.