OBD-II code · Powertrain (generic)
P05A9 Active Grille Air Shutter B Position Sensor Circuit
Active Grille Air Shutter B Position Sensor Circuit: an electrical fault is present in the circuit. Active grille shutters manage airflow for engine cooling and aerodynamics.
Is it safe to drive with P05A9?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in sensor or wiring
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
- P059AActive Grille Air Shutter A Position Sensor Circuit
- P05A6Active Grille Air Shutter A Supply Voltage Circuit Open
- P05A7Active Grille Air Shutter A Supply Voltage Circuit Low
- P05A8Active Grille Air Shutter A Supply Voltage Circuit High
- P05AAActive Grille Air Shutter B Position Sensor Range or Performance
- P05ABActive Grille Air Shutter B Position Sensor Circuit High
- P05ACActive Grille Air Shutter B Position Sensor Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.