DTC : P0533: General Description

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

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). The powertrain control module (PCM) compares the expected voltage to the A/C pressure sensor output voltage. When the A/C pressure sensor output voltage is higher than the expected voltage for a set time, the PCM detects a malfunction and stores a DTC.