DTC Advanced Diagnostics: P0532, P0533 (3.0L Engine)
DTC P0532: A/C Pressure Sensor Circuit Low Voltage DTC P0533: A/C Pressure Sensor Circuit High Voltage
General Description
The A/C pressure sensor measures the change in the pressure of the air conditioning refrigerant. The signal from the A/C pressure sensor is low voltage at low pressure (when the air conditioning load is low) and high voltage at high pressure (when the air conditioning load is high). If the A/C pressure sensor output voltage is excessively high or low, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 10 seconds or more |
| DTC Type | Two drive cycles, MIL off |
Enable Conditions
| Condition | |
|---|---|
| Vehicle | ON mode |
Malfunction Threshold
DTC: P0532
The A/C pressure sensor output voltage [A/C Pressure Sensor Voltage] is 0.225 V or less for at least 10 seconds.
DTC: P0533
The A/C pressure sensor output voltage [A/C Pressure Sensor Voltage] is 4.766 V or more for at least 10 seconds.
[ ]: HDS Parameter
Possible Cause
DTC: P0532
- A/C pressure sensor PD_SNSR line short to ground
- A/C pressure sensor VCC6 line open
- A/C pressure sensor VCC6 line short to ground
DTC: P0533
- A/C pressure sensor PD_SNSR line open
- A/C pressure sensor PD_SNSR line short to power
- A/C pressure sensor SG6 line open
Common
- A/C pressure sensor failure
- PCM internal circuit failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, a Confirmed DTC, the freeze data, and the on-board snapshot are stored. The MIL does not come on.
Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.