OBD-II code · Powertrain (generic)
P05AC Active Grille Air Shutter B Position Sensor Circuit Low
Same as P059D 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 P05AC?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal shorted to ground
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Active Grille Position Sensor B
Related codes
- P059DActive Grille Air Shutter A Position Sensor Circuit Low
- P05A9Active Grille Air Shutter B Position Sensor Circuit
- P05AAActive Grille Air Shutter B Position Sensor Range or Performance
- P05ABActive Grille Air Shutter B Position Sensor Circuit High
- P05ADActive Grille Air Shutter B Position Sensor Circuit Intermittent
- P05AEActive Grille Air Shutter B Performance Stuck Off
- P05AFActive Grille Air Shutter B Stuck On
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.