Engine-Codes.com
Engine-Codes – GMC – P1535 GMC

P1535 GMC Code - A/C High Side Temperature Sensor Circuit

Quick Answer

The P1535 GMC code indicates a problem with the A/C high side temperature sensor circuit in the vehicle. Common causes include Faulty high side temperature sensor: The sensor itself may be defective or damaged, Wiring issues: Damaged or corroded wiring connecting the sensor to the vehicle's computer can cause a malfunction, Sensor circuit malfunction: Problems with the circuitry that reads the sensor's signals can trigger the code. 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
P1535 GMC indicates A/C High Side Temperature Sensor Circuit.
Common causes
Common causes include Faulty high side temperature sensor: The sensor itself may be defective or damaged, Wiring issues: Damaged or corroded wiring connecting the sensor to the vehicle's computer can cause a malfunction, Sensor circuit malfunction: Problems with the circuitry that reads the sensor's signals can trigger the code.
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 05, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1535 GMC Description

The P1535 GMC code indicates a problem with the A/C high side temperature sensor circuit in the vehicle. This sensor is responsible for monitoring the temperature of the high-pressure side of the air conditioning system. The high side temperature sensor helps regulate the pressure and temperature of the refrigerant in the A/C system, ensuring optimal cooling performance. When this sensor circuit malfunctions, it can lead to issues with the A/C system's operation, potentially causing poor cooling performance or even damage to the system components.

OBDII Code P1535 GMC - A/C High Side Temperature Sensor Circuit
P1535 GMC Code - A/C High Side Temperature Sensor Circuit

Common Causes of P1535 GMC

  1. Faulty high side temperature sensor: The sensor itself may be defective or damaged.
  2. Wiring issues: Damaged or corroded wiring connecting the sensor to the vehicle's computer can cause a malfunction.
  3. Sensor circuit malfunction: Problems with the circuitry that reads the sensor's signals can trigger the code.
  4. Refrigerant leak: Low refrigerant levels can affect the pressure and temperature readings in the A/C system.
  5. Electrical issues: Problems with the vehicle's electrical system, such as a blown fuse, can disrupt the sensor's operation.

Symptoms of P1535 GMC

  1. Reduced cooling efficiency: The A/C system may not cool the interior of the vehicle as effectively as usual.
  2. A/C compressor cycling: The A/C compressor may cycle on and off more frequently than normal.
  3. A/C system not working: The A/C system may fail to operate altogether.
  4. Check Engine Light: The check engine light may illuminate on the dashboard.
  5. Unusual noises: Strange noises, such as rattling or hissing, may be heard from the A/C system.

How to Fix P1535 GMC

  1. Diagnose the issue: Use a scan tool to retrieve the trouble code and test the high side temperature sensor and its circuit.
  2. Inspect wiring and connections: Check the wiring harness and connectors for any damage or corrosion, repairing or replacing as necessary.
  3. Replace the high side temperature sensor: If the sensor is faulty, install a new one following the manufacturer's guidelines.
  4. Clear the trouble code: After completing the repair, use the scan tool to clear the trouble code from the vehicle's computer.
  5. Test the A/C system: Verify that the A/C system is functioning properly and that the issue has been resolved.

Cost to Fix P1535 GMC

The cost of repairing a P1535 GMC code related to the A/C high side temperature sensor circuit can vary depending on the specific cause of the issue and the vehicle make and model. In general, the cost of parts for this repair can range from $50 to $150, with labor costs adding an additional $80 to $150 per hour. Overall, the total repair cost is typically between $150 and $400. However, it's important to note that prices may vary based on factors such as location and the repair shop's rates.

Need more information about the P1535 GMC code?

Need more information on how to fix the P1535 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1535 GMC code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about P1535 GMC Code

1. What does the OBDII code P1535 mean on a GMC vehicle?

P1535 indicates an issue with the A/C High Side Temperature Sensor Circuit, which monitors the high-pressure side of the air conditioning system.

2. What are the common symptoms of a P1535 code?

Symptoms may include the A/C not functioning properly, inconsistent cabin cooling, or the A/C system being disabled altogether.

3. What causes the P1535 code to appear?

Common causes include a faulty A/C high side temperature sensor, damaged wiring or connectors, or a malfunction in the A/C control module.

4. Can I still drive my GMC with a P1535 code?

Yes, but the A/C system may not work correctly, and ignoring the issue could lead to further system damage over time.

5. How do I diagnose a P1535 code?

Start by inspecting the A/C high side temperature sensor, checking for damaged wiring or loose connections, and using a scan tool to verify sensor readings.

6. How do I fix the P1535 code on a GMC?

Repairs may involve replacing the faulty A/C high side temperature sensor, repairing damaged wiring, or reprogramming the A/C control module if necessary.

7. Is the P1535 code related to refrigerant levels in the A/C system?

Not directly, but low or high refrigerant levels can stress the system and potentially contribute to sensor issues.

8. How much does it cost to fix a P1535 code?

Costs vary depending on the specific issue, but sensor replacement typically ranges from $100 to $300, including parts and labor.

9. Can a bad A/C high side temperature sensor damage other components?

Yes, if the sensor fails to detect high pressure or temperature accurately, it could prevent the A/C system from shutting down, potentially damaging the compressor or other parts.

10. Will clearing the P1535 code fix the problem?

Clearing the code without addressing the underlying issue will only provide a temporary fix, and the code will likely return.

Discuss the causes and fixes for P1535 GMC OBDII Code

Submit a New Comment

Code P1535 GMC comments

No comments found for this page.