Error Code Guide
P045C
Low Severity
Exhaust Gas Recirculation - Control Circuit Low
Don't ignore this warning! Complete diagnostic guide to understand, diagnose, and fix this trouble code.
Step-by-step guide
Repair cost estimates
What does P045C mean?
The P045C diagnostic trouble code indicates: Exhaust Gas Recirculation - Control Circuit Low. This is a powertrain-related code that affects your vehicle's engine or transmission performance. When this code is triggered, the Engine Control Module (ECM) has detected a fault in the related system or component.
Common SymptomsWatch out for these warning signs
- Check Engine Light (CEL) illuminated
- Malfunction Indicator Lamp (MIL) on
- Failed emissions test
- Reduced fuel economy
- Unusual exhaust smell
- Engine performance issues
Possible CausesDiagnose from most to least common
- 1Open or short in wiring harness
- 2Poor electrical connection
- 3Damaged wiring insulation
- 4Faulty ground connection
- 5Low voltage at component
- 6Weak or failing component
- 7Restriction in related system