A/C Refrigerant Pressure Sensor A Circuit Intermittent or Erratic
The high-side refrigerant pressure sensor A reports intermittent or erratic signal - typically a connector or harness fault on the sensor that lives close to the compressor.
Affected components
- Ac pressure sensor a
- Ac pressure wiring a
Common causes
- High likelihood: Intermittent contact at connector
- Low likelihood: Connector with intermittent contact under vibration
- Low likelihood: Harness routed against vibrating component
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.