Powertrain
generic / SAE
P05A4
Active Grille Air Shutter A Control Circuit High
Same as P05A2 with the control line shorted to supply. 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 / A4
Possible causes
- Control line shorted to supply high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 120–500 €
- Estimated time: 0.6–2 h
- Component: active grille actuator a
- MIL / check engine light
Sources
References
sae:J2012