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P2C77 Powertrain

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.

Affected components

  • Active grille shutter d
  • Wiring harness
  • Ecm

Common causes

  • High likelihood: Actuator response slower than expected
  • Medium likelihood: High-resistance contact in connector
  • Low likelihood: Sensor element aged beyond calibration window

Diagnostic notes

  • The malfunction indicator lamp may illuminate

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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