P04D5

2017-10-10

Description:

  • Exhaust Brake Input Circuit Low

Possible Symptoms:

  • Check the wiring and connections for any damage or loose connections.

  • Inspect the brake pedal position sensor and ensure it is properly calibrated.

  • Verify the brake fluid level and quality, and replace if necessary.

  • Test the exhaust brake solenoid for proper functionality and replace if faulty.

  • If all else fails, consider replacing the ECM (Engine Control Module) as a last resort.

Possible Causes:

  • Faulty exhaust brake sensor or switch

  • Wiring or connection issue in the exhaust brake circuit

  • Faulty engine control module (ECM)

  • Possible short circuit or open circuit in the exhaust brake circuit

  • Faulty exhaust brake actuator or solenoid valve

Related Parts:

Possible Solutions:

  • The vehicle may experience a significant loss of power when accelerating.

  • The check engine light may illuminate on the dashboard.

  • The vehicle may emit excess exhaust smoke or have a poor exhaust odor.

  • The engine may idle roughly or have difficulty starting.

  • The vehicle may have decreased fuel efficiency.

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