OBD-II code · Powertrain (generic)
P05B7 Active Grille Air Shutter B Supply Voltage Circuit High
Same as P05A8 on shutter B. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P05B7?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySupply voltage above design range
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.4–1.4 h
- Emissions test
- Usually unaffected
- Parts involved
- Active Grille Actuator B
Related codes
- P05A8Active Grille Air Shutter A Supply Voltage Circuit High
- P05B4Active Grille Air Shutter B Control Circuit Low
- P05B5Active Grille Air Shutter B Supply Voltage Circuit Open
- P05B6Active Grille Air Shutter B Supply Voltage Circuit Low
- P05B8Restraint Deployment Signal Circuit Open
- P05B9Restraint Deployment Signal Circuit Low
- P05BARestraint Deployment Signal Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.