OBD-II code · Powertrain (generic)
P05B6 Active Grille Air Shutter B Supply Voltage Circuit Low
Same as P05A7 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 P05B6?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySupply voltage low
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
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
- P05A7Active Grille Air Shutter A Supply Voltage Circuit Low
- P05B3Active Grille Air Shutter B Control Circuit High
- P05B4Active Grille Air Shutter B Control Circuit Low
- P05B5Active Grille Air Shutter B Supply Voltage Circuit Open
- P05B7Active Grille Air Shutter B Supply Voltage Circuit High
- P05B8Restraint Deployment Signal Circuit Open
- P05B9Restraint Deployment Signal Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.