P0530 - A / C REFRIGERANT PRESSURE SENSOR A CIRCUIT MALFUNCTION

The Refrigerant Pressure Sensor (RPS) assists the HVAC system (Ventilation, Heating, and Air Conditioning) to regulate the temperature inside the vehicle as needed.

This sensor turns coolant system pressure into an analog electrical signal, which allows the vehicle’s modules to monitor this signal.

If the ECM (Engine Control Module) illuminates the Check Engine light along with the DTC P0530 OBD2 code, it is because it has detected a fault in the Coolant Pressure Sensor (RPS) or the associated circuitry.

• MIL (Motor Malfunction) light ON.
• Fan air temperature is erroneous or fluctuating.
• Use of the HVCA System is limited or may not work at all.

Reasons for setting the P0530 OBDII fault code are:

• The Coolant Pressure Sensor (RPS) may be faulty.
• Leakage from the RPS.
• Possible wrong coolant pressure.
• Cables or components may be damaged.
• Poor electrical connections.

To troubleshoot the P0530 OBD2 error code, try this:

• Consult the TSBs for your vehicle.
• Inspect all the wiring related to the air conditioning system. If you determine some of them are faulty, make repairs. If necessary, replace them.
• Try to check the reference voltage, continuity, and resistance of all the associated wires. Compare the readings obtained with the manufacturer's manual. Repair or replace if there are inconsistencies in the values.