The A/C compressor relief valve has vented refrigerant NOTE: This indicates the A/C system high side pressure was high (2017 2018 2019)
Diagnostic Procedure
Probable cause: A high-side restriction, the cooling fan is inoperative, or the A/C compressor clutch is not disengaging
- If the fans and A/C compressor clutch operate normally, feel the lines for restrictions
- If the A/C compressor clutch will not disengage, troubleshoot the A/C compressor clutch circuit , and check for mechanical problems
- If the A/C condenser/radiator fans are inoperative, troubleshoot the fan circuits
Also Check for