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

Quick Answer

The P0533 diagnostic trouble code (DTC) for Saturn vehicles refers to the A/C Refrigerant Pressure Sensor Circuit High Input. Common causes include Faulty A/C refrigerant pressure sensor, Wiring issues, such as short circuits or open circuits in the sensor circuit, Malfunctioning PCM. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0533 Saturn indicates A/C Refrigerant Pressure Sensor Circuit High Input.
Common causes
Common causes include Faulty A/C refrigerant pressure sensor, Wiring issues, such as short circuits or open circuits in the sensor circuit, Malfunctioning PCM.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0533 Saturn Description

The P0533 diagnostic trouble code (DTC) for Saturn vehicles refers to the A/C Refrigerant Pressure Sensor Circuit High Input. This code is triggered when the powertrain control module (PCM) detects a high voltage signal from the A/C refrigerant pressure sensor. The A/C refrigerant pressure sensor is a crucial component of the air conditioning system that monitors the pressure of the refrigerant and sends this information to the PCM to regulate the compressor operation and maintain the proper pressure levels within the system.

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

Common Causes of P0533 Saturn

  1. Faulty A/C refrigerant pressure sensor.
  2. Wiring issues, such as short circuits or open circuits in the sensor circuit.
  3. Malfunctioning PCM.
  4. Refrigerant leak in the A/C system.

Symptoms of P0533 Saturn

  1. Inefficient cooling performance from the A/C system.
  2. A/C compressor cycling on and off frequently.
  3. Illumination of the A/C warning light on the dashboard.
  4. Decreased fuel efficiency due to A/C system overworking.
  5. Unusual noises coming from the A/C system.

How to Fix P0533 Saturn

  1. Begin by diagnosing the A/C refrigerant pressure sensor using a multimeter to check for proper voltage output.
  2. Inspect the wiring harness for any signs of damage or corrosion and repair or replace as necessary.
  3. Verify the A/C system refrigerant levels and check for any leaks that may be causing the high pressure readings.
  4. If the A/C refrigerant pressure sensor is found to be faulty, replace it with a new sensor following the manufacturer's instructions.
  5. Clear the DTC codes and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P0533 Saturn

The cost of repairing the P0533 code for Saturn vehicles can vary depending on the specific cause of the issue. On average, the cost of replacing the A/C refrigerant pressure sensor can range from $100 to $200, including parts and labor. However, additional costs may apply if there are wiring issues or refrigerant leaks that need to be addressed. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. It is recommended to consult with a trusted mechanic or dealership for a more accurate cost estimate based on your vehicle's specific make and model.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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