Cadillac specific DTC OBD2 code: P1543 A/C System Performance
Cadillac specific DTC OBD2 code: P1544 A/C Refrigerant Condition Very Low
Cadillac specific DTC OBD2 code: P1545 A/C Clutch Relay Control Circuit
Cadillac specific DTC OBD2 code: P1546 Air Conditioning (A/C) Clutch Feedback Circuit Low Voltage
Cadillac specific DTC OBD2 code: P1547 A/C System Performance Degraded
Cadillac specific DTC OBD2 code: P1548 A/C Recirculation Circuit
Cadillac specific DTC OBD2 code: P1554 Cruise Engaged Circuit High Voltage
Cadillac specific DTC OBD2 code: P1555 Electronic Variable Orifice Output
Cadillac specific DTC OBD2 code: P1558 Cruise Control Servo Indicates Low
Cadillac specific DTC OBD2 code: P1559 Cruise Control Power Mangement Mode