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Engine-Codes – Generic – P1535

P1535 Code - A/C High Side Temperature Sensor Circuit

Quick Answer

The P1535 code refers to a fault in the A/C high side temperature sensor circuit. Common causes include Faulty A/C high side temperature sensor, Wiring or connection issues in the sensor circuit, Corrosion or damage to sensor connectors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1535 indicates A/C High Side Temperature Sensor Circuit.
Common causes
Common causes include Faulty A/C high side temperature sensor, Wiring or connection issues in the sensor circuit, Corrosion or damage to sensor connectors.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P1535 Description

The P1535 code refers to a fault in the A/C high side temperature sensor circuit. This sensor is responsible for monitoring the temperature of the high-pressure side of the air conditioning system. The high side of the A/C system is where the refrigerant is compressed and becomes hot before moving to the condenser to release heat and cool down.

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

Common Causes of P1535

  1. Faulty A/C high side temperature sensor
  2. Wiring or connection issues in the sensor circuit
  3. Corrosion or damage to sensor connectors
  4. Electrical issues such as shorts or open circuits in the sensor circuit
  5. Issues with the HVAC control module or related components

Symptoms of P1535

  1. Inconsistent cooling performance from the A/C system
  2. A/C system not blowing cold air
  3. A/C system blowing hot air
  4. A/C system shutting off unexpectedly
  5. A/C system displaying incorrect temperature readings on the control panel

How to Fix P1535

  1. Begin by diagnosing the specific cause of the fault code using a scan tool to pinpoint the issue.
  2. Inspect the A/C high side temperature sensor and its wiring for any visible damage or corrosion. Replace the sensor if necessary.
  3. Check the connectors and wiring in the sensor circuit for any loose connections or breaks. Repair or replace as needed.
  4. Clear the fault code from the vehicle's computer using the scan tool.
  5. Test the A/C system to ensure that the issue has been resolved and that the sensor is providing accurate temperature readings.

Cost to Fix P1535

The cost of repairing a P1535 code related to the A/C high side temperature sensor circuit can vary depending on the specific cause of the issue and the make and model of the vehicle. In general, the cost of replacing the sensor itself can range from $50 to $150, with additional costs for labor. The total repair cost, including parts and labor, can range from $100 to $300 or more. It's recommended to get a detailed quote from a reputable auto repair shop, taking into account their hourly labor rates and any additional diagnostic time that may be required.

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Code P1535 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.

Frequently Asked Questions about P1535 Code

1. What are the common symptoms of OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit?

When OBDII code P1535 is triggered, common symptoms may include the air conditioning system not cooling properly, intermittent cooling, or the A/C compressor cycling on and off frequently.

2. What are the typical causes of OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit?

Common causes of OBDII code P1535 include a faulty high side temperature sensor, damaged wiring or connectors in the sensor circuit, or an issue with the A/C control module.

3. How can I diagnose OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit?

Diagnosing OBDII code P1535 involves using a scan tool to read the code, checking the high side temperature sensor for proper operation, inspecting the sensor wiring and connectors for damage, and testing the A/C control module.

4. Can I drive my vehicle with OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit?

It is not recommended to drive your vehicle with OBDII code P1535 present, as it can lead to further damage to the A/C system and affect overall vehicle performance. It is best to address the issue promptly.

5. How can I repair OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit?

Repairing OBDII code P1535 may involve replacing the high side temperature sensor, repairing or replacing damaged wiring or connectors, or reprogramming the A/C control module. It is recommended to follow the manufacturer's repair procedures.

6. Is OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit a common issue in certain vehicle makes and models?

OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit can be a common issue in some vehicle makes and models, particularly in vehicles with complex climate control systems.

7. What are the consequences of ignoring OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit?

Ignoring OBDII code P1535 can lead to reduced A/C system efficiency, increased fuel consumption, potential damage to other A/C components, and discomfort while driving in hot weather.

8. Can a DIY enthusiast fix OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit?

Depending on the individual's level of automotive repair experience and access to tools, a DIY enthusiast may be able to diagnose and repair OBDII code P1535. However, complex issues may require professional assistance.

9. How long does it typically take to repair OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit?

The repair time for OBDII code P1535 can vary depending on the exact cause of the issue, the availability of parts, and the individual's repair skills. It may take anywhere from a few hours to a full day to complete the repair.

10. Are there any preventative maintenance measures to avoid OBDII code P1535 related to the A/C High Side Temperature Sensor Circuit?

To prevent OBDII code P1535, regular maintenance of the A/C system, including checking for leaks, monitoring refrigerant levels, and inspecting sensor connections, can help avoid potential issues with the high side temperature sensor circuit.

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