P05B5
Active Grille Air Shutter B Supply Voltage Circuit/Open
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace any damaged or disconnected wiring in the Active Grille Air Shutter B Supply Voltage Circuit
- Inspect and replace the Active Grille Air Shutter B if it is faulty or stuck in the closed position
- Verify and fix any corrosion or loose connections in the Active Grille Air Shutter B electrical connector
- Reset the car's computer system by disconnecting the battery for a few minutes and then reconnecting it
Common causes
Most likely first
- Faulty active grille air shutter motor
- Malfunctioning grille air shutter control module
- Wiring issue or loose connection in the supply voltage circuit
- Faulty relay or fuse related to the active grille air shutter system
- Software issue or malfunction in the vehicle's computer system related to the active grille air shutter function
How to diagnose & fix
Work through it in order
- Engine misfire or hesitation
- Decreased fuel efficiency
- Engine overheating
- Engine stalling or rough idling
- Illumination of the check engine light
Read & clear P05B5 yourself
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