Intake Air Heater C Circuit Low
The control circuit of intake air heater C reports a circuit low condition. Cold-start preheating cannot be commanded as expected.
Affected components
- Intake air heater c
- Wiring harness
- Ecm
Common causes
- High likelihood: Control wire shorted to ground
- Medium likelihood: Heater element shorted
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.