Engine-Codes - Generic - P0532

P0532 Code - A/C Refrigerant Pressure Sensor Circuit Low Input

- Code Popularity: 40,137 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P0532?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • A/C system low or overcharged with refrigerant
  • Cooling fans are inoperative
  • Faulty A/C Refrigerant Pressure Sensor
  • A/C Refrigerant Pressure Sensor circuit open or shorted
  • A/C Refrigerant Pressure Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
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How to Fix the DTC P0532?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0532 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • A/C Inoperative
  • A/C Blows Warm

What Does the P0532 Code Mean?

The Engine Control Module (ECM) monitors the high side refrigerant pressure through the A/C Refrigerant Pressure Sensor. The ECM supplies a 5 V reference and a low reference to the sensor. Changes in the A/C refrigerant pressure cause the sensor signal to the ECM to vary. When the pressure is high, the signal voltage is high. When the pressure is low, the signal voltage is low. The ECM may use this information to turn the cooling fans on as well as to monitor clutch engagement. The HVAC module will receive the A/C refrigerant pressure information from the ECM via serial data. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the A/C pressure is less than 1 psi (0.25 V).
P0532 Code - A/C Refrigerant Pressure Sensor Circuit Low Input

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Code P0532 Information for Specific Makes

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