A/C Compressor Relief Valve Has Vented Refrigerant

The A/C compressor relief valve has vented refrigerant

Probable cause: The A/C condenser/radiator fans are inoperative:

Do the A/C condenser fan circuit troubleshooting A/C Condenser Fan Circuit Troubleshooting

Do the radiator fan circuit troubleshooting Radiator Fan Circuit Troubleshooting (With A/C)

Do the radiator and A/C condenser fan common circuit troubleshooting Radiator And A/C Condenser Fan Common Circuit Troubleshooting (With A/C)

Probable cause: the A/C compressor clutch is not disengaging:

Do the A/C compressor clutch circuit troubleshooting A/C Compressor Clutch Circuit Troubleshooting

Do the A/C compressor clutch check Testing and Inspection

Probable cause: A restriction in the high-pressure side of the system

Recover A/C refrigerant A/C Refrigerant Recovery, then check the A/C condenser, the receiver/dryer, and the liquid line for restrictions. Repair as needed. Recharge the system to specifications A/C System Charging

Also check for

Powertrain DTCs Initial Inspection and Diagnostic Overview

Also check for

Poor or loose connections at the terminals