P05B7
Active Grille Air Shutter B Supply Voltage Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Inspect and repair any damaged wiring or loose connections in the Active Grille Air Shutter B supply voltage circuit
- Replace the Active Grille Air Shutter B motor if it is found to be faulty
- Check and replace the Active Grille Air Shutter B relay if necessary
- Verify and rectify any issues with the vehicle's power supply system that may be causing the high voltage in the Active Grille Air Shutter B supply circuit
Common causes
Most likely first
- Faulty active grille air shutter
- Issues with the supply voltage circuit
- Damaged wiring or connectors in the B supply voltage circuit
- Malfunctioning control module related to the active grille air shutter
- Faulty sensor or sensor circuit connected to the active grille air shutter
How to diagnose & fix
Work through it in order
- Engine misfire or poor performance
- Difficulty starting the engine
- Reduced fuel efficiency
- Illuminated Check Engine Light
- Overheating of the engine
Read & clear P05B7 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.