A/C Refrigerant Pressure Sensor "A" Circuit High
A/C pressure sensor signal voltage above the upper threshold — short to supply, defective sensor, or a system overcharge/blocked condenser causing genuine high pressure.
Affected components
- Ac pressure sensor
- Ac condenser
Common causes
- Medium likelihood: Condenser blocked or fan inoperative
- Medium likelihood: Sensor circuit shorted to supply
- Low likelihood: Connector pins corroded - high contact resistance
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.