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Engine-Codes – Generic – P1533

P1533 Code - A/C Evaporator Temperature Sensor Circuit High Voltage

Quick Answer

The P1533 code indicates that there is a problem with the A/C evaporator temperature sensor circuit, specifically that the voltage is too high. Common causes include Faulty A/C evaporator temperature sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor or circuit. 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
P1533 indicates A/C Evaporator Temperature Sensor Circuit High Voltage.
Common causes
Common causes include Faulty A/C evaporator temperature sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor or circuit.
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 P1533 Description

The P1533 code indicates that there is a problem with the A/C evaporator temperature sensor circuit, specifically that the voltage is too high. The A/C evaporator temperature sensor is responsible for monitoring the temperature of the air conditioning system's evaporator core. This information is crucial for the system to properly regulate the temperature inside the vehicle. When the sensor detects that the voltage is too high, it means that there is likely a malfunction in the circuit, which can lead to incorrect temperature readings and affect the overall performance of the A/C system.

OBDII Code P1533 - A/C Evaporator Temperature Sensor Circuit High Voltage
P1533 Code - A/C Evaporator Temperature Sensor Circuit High Voltage

Common Causes of P1533

  1. Faulty A/C evaporator temperature sensor
  2. Wiring or connector issues in the sensor circuit
  3. Corrosion or damage to the sensor or circuit
  4. Electrical issues in the A/C system
  5. Faulty A/C control module

Symptoms of P1533

  1. Inconsistent cooling performance
  2. A/C system blowing hot air
  3. A/C system not cooling at all
  4. Incorrect temperature readings on the dashboard
  5. A/C system turning on and off unexpectedly

How to Fix P1533

  1. Begin by diagnosing the specific cause of the high voltage in the A/C evaporator temperature sensor circuit.
  2. Check the sensor, wiring, and connectors for any visible damage or corrosion.
  3. Test the sensor and circuit using a multimeter to determine if they are functioning correctly.
  4. Replace the A/C evaporator temperature sensor if it is found to be faulty.
  5. Clear the diagnostic trouble codes and test the A/C system to ensure that the issue has been resolved.

Cost to Fix P1533

The cost of repairing a high voltage issue in the A/C evaporator temperature sensor circuit can vary depending on the specific cause of the problem and the vehicle's make and model. Typically, the cost of replacing the sensor itself ranges from $50 to $150, while the labor costs for diagnosis and repair can range from $100 to $300. Overall, the total repair cost could fall between $150 to $450. It is advisable to consult with a professional mechanic to get an accurate estimate based on your specific vehicle and location.

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Code P1533 Information for Specific Makes

  • P1533 Audi — Intake Camshaft Control Circuit Bank 2 Electrical Malfunction
  • P1533 BMW — Camshaft Position Actuator 'B' Control Circuit Signal Low Bank 2
  • P1533 Buick — A/C Evaporator Temperature Sensor Circuit High Voltage
  • P1533 Cadillac — A/C Evaporator Temperature Sensor Circuit High Voltage
  • P1533 Chevrolet — A/C Evaporator Temperature Sensor Circuit High Voltage
  • P1533 Ford — AAI Circuit Malfunction
  • P1533 GMC — A/C Evaporator Temperature Sensor Circuit High Voltage
  • P1533 Mercedes-Benz — Intake Camshaft Control Circuit Bank 2 Electrical Malfunction
  • P1533 MINI — Camshaft Position Actuator 'B' Control Circuit Signal Low Bank 2
  • P1533 Volkswagen — Intake Camshaft Control Circuit Bank 2 Electrical Malfunction
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 P1533 Code

1. What are common symptoms of OBDII code P1533 (A/C Evaporator Temperature Sensor Circuit High Voltage)?

- Common symptoms include the air conditioning system not cooling properly, strange odors coming from the vents, and the A/C compressor cycling on and off frequently.

2. What are the potential causes of OBDII code P1533?

- The code P1533 can be triggered by issues such as a faulty A/C evaporator temperature sensor, damaged wiring in the sensor circuit, or a malfunctioning HVAC control module.

3. How can I diagnose the root cause of OBDII code P1533?

- Diagnosis typically involves using a scan tool to retrieve the trouble codes, testing the A/C evaporator temperature sensor for proper function, and inspecting the wiring for any damage or loose connections.

4. Can I continue driving my vehicle with OBDII code P1533 present?

- While you may still be able to drive your vehicle with the code present, it is not recommended as it can lead to further damage to the A/C system and potential discomfort while driving in extreme temperatures.

5. Is it possible to clear OBDII code P1533 without fixing the underlying issue?

- Clearing the code without addressing the root cause is not recommended, as the issue will persist and the code is likely to return, potentially causing more serious problems over time.

6. What are some repair tips for fixing OBDII code P1533?

- Repair tips include checking and replacing the A/C evaporator temperature sensor if faulty, repairing any damaged wiring, and ensuring the HVAC control module is functioning correctly.

7. Can a DIY enthusiast fix OBDII code P1533 at home?

- Depending on your skill level and access to tools, it is possible to fix OBDII code P1533 at home by following repair guides and procedures specific to your vehicle model.

8. How much does it cost to repair OBDII code P1533 at a professional auto repair shop?

- Repair costs for OBDII code P1533 can vary depending on the root cause, but on average, you can expect to pay between $150 to $400 for parts and labor at a professional auto repair shop.

9. Will fixing OBDII code P1533 improve my vehicle's fuel efficiency?

- Fixing OBDII code P1533 may improve your vehicle's fuel efficiency if the issue was causing the A/C system to work harder than necessary, resulting in increased fuel consumption.

10. How can I prevent OBDII code P1533 from occurring in the future?

- To prevent OBDII code P1533, it's important to perform regular maintenance on your vehicle's A/C system, including checking the sensors, wiring, and HVAC components for any signs of wear or damage.

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