What does the Buick Enclave fault code c056d-00 mean?
1 Answers
Automotive fault code c056d indicates poor fuel trim (air-fuel ratio). Key areas to inspect include fuel pressure, potential leaks or blockages in the intake system, and whether sensors measuring intake air volume are damaged. Another possible cause could be poor fuel quality. Fault code causes: Fault code c056d indicating a rich air-fuel mixture means the oxygen sensor detects insufficient oxygen (excess gasoline) in the exhaust. Possible solutions include cleaning the throttle body, replacing the air filter, or addressing oxygen sensor malfunctions. Repair method: 1. Remove the throttle body hose 2. Open the throttle plate 3. Clean with a brush 4. Spray with cleaning solution 5. Reinstall the hose to complete the process