Intake Air Heater C Circuit Range/Performance
The control circuit of intake air heater C reports a circuit range/performance condition. Cold-start preheating cannot be commanded as expected.
Affected components
- Intake air heater c
- Wiring harness
- Ecm
Common causes
- High likelihood: Heater element aged - low output
- Medium likelihood: Supply voltage low under load
- Low likelihood: Sensor element aged beyond calibration window
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.