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P0533 Chevrolet Code - A/C Refrigerant Pressure Sensor Circuit High Input

- Code Popularity: 13,330 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0533 Chevrolet?

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 P0533 Chevrolet?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0533 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to 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

Code P0533 Chevrolet Description

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 more than 428 psi (4.92 V).
OBDII Code P0533 Chevrolet - A/C Refrigerant Pressure Sensor Circuit High Input - AutoCodes.com
P0533 Chevrolet Code - A/C Refrigerant Pressure Sensor Circuit High Input

Need More Information on the Code?

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Code P0533 Chevrolet comments

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