P2C77
Active Grille Air Shutter D Control Circuit Range/Performance
The control circuit of active grille air shutter D reports a range/performance condition. Actuator response or current draw outside calibration.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Actuator response slower than expectedCommon
- High-resistance contact in connectorPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Active Grille Shutter D
- Wiring Harness
- ECM
P2C77 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.