Variable A/C Compressor Control Circuit Range/Performance
The variable-displacement A/C compressor control valve does not respond to commands within tolerance. Refrigerant flow regulation is degraded so cabin temperature varies or efficiency drops.
Affected components
- Ac compressor control valve
- Ac compressor
Common causes
- High likelihood: Control valve spool sticky from oil residue
- Medium likelihood: Solenoid coil resistance drift
- Low likelihood: Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.