Powertrain
generic / SAE
P05B1
Active Grille Air Shutter B Control Circuit Open
The control circuit driving the actuator of shutter A is open - the ECU cannot move the shutter. 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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / B1
Possible causes
- Open in actuator or harness high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–500 €
- Estimated time: 0.6–2 h
- Component: active grille actuator b
- MIL / check engine light
Sources
References
sae:J2012