A/C Refrigerant Temperature Sensor A Circuit Low
The ECM detects a low fault on the a/c refrigerant temperature sensor a circuit. Reading cannot be used reliably for control.
Affected components
- Ac refrigerant temp sensor a
- Wiring harness
Common causes
- High likelihood: Signal wire shorted to ground
- Medium likelihood: Internal sensor short
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
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.