A/C Compressor Control Module Internal Temperature Sensor A Circuit Intermittent/Erratic
The ECM detects a intermittent/erratic fault on the a/c compressor control module internal temperature sensor a circuit. Reading cannot be used reliably for control.
Affected components
- Ac compressor cm internal temp sensor a
- Wiring harness
- Ac compressor module
Common causes
- High likelihood: Sensor connector not seated
- Medium likelihood: Noisy ground reference
- Low likelihood: Connector with intermittent contact under vibration
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
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.