Conditions for Setting the DTC

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The ECM detects that the A/C pressure is less than 0 psi (0.01 volts).
The ECM detects that the A/C pressure is more than 446 psi (4.94 volts).

P0530: The ECM detects a too high or too low signal on the A/C refrigerant pressure sensor signal circuit.
The ECM has received an A/C request from the BCM over serial data with A/C sensor voltage greater than 4.94 volts (446 psi).
The ECM is not receiving an A/C request from the BCM over serial data with A/C refrigerant pressure sensor voltage greater than 4.0 volts (358 psi).
Conditions for setting the DTC are met for 15 seconds.
P0532: The ECM detects a low signal on the A/C refrigerant pressure sensor signal circuit.
Conditions for setting the DTC are met for longer than 3 seconds.
P0533: The ECM detects a high signal on the A/C refrigerant pressure sensor signal circuit.
Conditions for setting the DTC are met for longer than 3 seconds.