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Engine-Codes – Generic – P0535

P0535 Code - A/C Evaporator Temperature Sensor Circuit

Quick Answer

The P0535 code indicates a problem with the A/C evaporator temperature sensor circuit in the vehicle's air conditioning system. Common causes include Faulty A/C evaporator temperature sensor, Damaged wiring or connectors in the sensor circuit, ECM receiving incorrect sensor data. 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
P0535 indicates A/C Evaporator Temperature Sensor Circuit.
Common causes
Common causes include Faulty A/C evaporator temperature sensor, Damaged wiring or connectors in the sensor circuit, ECM receiving incorrect sensor data.
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 15, 2024
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Code P0535 Description

The P0535 code indicates a problem with the A/C evaporator temperature sensor circuit in the vehicle's air conditioning system. The A/C evaporator temperature sensor is responsible for monitoring the temperature of the evaporator core, which is a key component in the A/C system. The sensor sends temperature data to the vehicle's engine control module (ECM) to help regulate the A/C system's operation.

OBDII Code P0535 - A/C Evaporator Temperature Sensor Circuit
P0535 Code - A/C Evaporator Temperature Sensor Circuit

Common Causes of P0535

  1. Faulty A/C evaporator temperature sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM receiving incorrect sensor data
  4. Corrosion or poor connections in the sensor circuit
  5. Electrical issues affecting the A/C system

Symptoms of P0535

  1. Inconsistent cooling performance from the A/C system
  2. A/C system blowing warm air instead of cold air
  3. A/C system not cooling the vehicle interior effectively
  4. A/C system cycling on and off frequently
  5. Illumination of the A/C warning light on the dashboard

How to Fix P0535

  1. Begin by diagnosing the A/C system using a scan tool to retrieve the P0535 code and confirm the issue with the A/C evaporator temperature sensor circuit.
  2. Inspect the sensor, wiring, and connectors for any visible damage or corrosion. Replace any components that show signs of wear or damage.
  3. Test the A/C evaporator temperature sensor using a multimeter to ensure it is functioning correctly.
  4. Clear the diagnostic trouble codes from the ECM and reset the A/C system to see if the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to pinpoint the exact cause of the sensor circuit malfunction and address it accordingly.

Cost to Fix P0535

** The typical repair costs for addressing a P0535 code related to the A/C evaporator temperature sensor circuit can range from $150 to $400, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates may be higher in metropolitan areas or at dealerships, while independent shops often charge less. It's recommended to check local rates for a more accurate estimate.

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Code P0535 Information for Specific Makes

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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