P0533

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DTC P0533 A/C Refrigerant Pressure Sensor Circuit High Input




Circuit Description
The Powertrain Control Module (PCM) monitors the A/C refrigerant pressure through the use of a three wire sensor. If the PCM senses the pressure falls below a threshold value, then DTC P0533 will set. DTC P0533 is a type D code.

Conditions for Setting the DTC
- A/C pressure sensor is above 250 counts (4.88 volts) for 125 seconds within a 250 seconds test sample.

Action Taken When the DTC Sets
- The PCM will not illuminate the Malfunction Indicator Lamp (MIL).
- The PCM will store the conditions that were present when the DTC was set as Freeze Frame and in Failure Records.

Conditions for Clearing the DTC
- A history DTC will clear after 40 consecutive trips without a reported failure.
- The DTC can be cleared using a Scan Tool's "Clear Info" function.

Diagnostic Aids
- Poor Conditions, or a damaged harness - Inspect the harness connectors for: backed-out terminals, improper mating or damaged terminals. Also, check for open circuits, shorts to ground, and shorts to voltage.