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Engine-Codes – Generic – B1245

B1245 Code - Short In The Rear Air Mix Control Motor Circuit

Quick Answer

The B1245 code indicates a short in the rear air mix control motor circuit. Common causes include Faulty rear air mix control motor, Wiring issues in the rear air mix control motor circuit, Corrosion or damage to the electrical connectors related to the rear air mix control motor. 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
B1245 indicates Short In The Rear Air Mix Control Motor Circuit.
Common causes
Common causes include Faulty rear air mix control motor, Wiring issues in the rear air mix control motor circuit, Corrosion or damage to the electrical connectors related to the rear air mix control motor.
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 Aug 30, 2024
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Code B1245 Description

The B1245 code indicates a short in the rear air mix control motor circuit. This means that there is an issue with the motor that controls the temperature of the air in the rear of the vehicle. This can affect the HVAC system's ability to properly regulate the temperature in the rear of the vehicle, leading to discomfort for passengers. If left unaddressed, this issue can lead to inconsistent heating or cooling in the rear of the vehicle, potentially causing discomfort for passengers and affecting the overall climate control system's performance.

OBDII Code B1245 - Short In The Rear Air Mix Control Motor Circuit
B1245 Code - Short In The Rear Air Mix Control Motor Circuit

Common Causes of B1245

  1. Faulty rear air mix control motor.
  2. Wiring issues in the rear air mix control motor circuit.
  3. Corrosion or damage to the electrical connectors related to the rear air mix control motor.
  4. Issues with the HVAC control module.

Symptoms of B1245

  1. Inconsistent temperature control in the rear of the vehicle.
  2. Unresponsive rear HVAC controls.
  3. Strange noises coming from the rear air mix control motor.
  4. Rear vents blowing air at the wrong temperature.
  5. Rear air conditioning or heating not working at all.

How to Fix B1245

  1. Diagnose the issue by using a scan tool to read the code and test the rear air mix control motor circuit.
  2. Inspect the wiring and connectors for any signs of damage or corrosion.
  3. Replace the rear air mix control motor if it is faulty.
  4. Clear the diagnostic trouble codes from the vehicle's computer.
  5. Test the system to ensure that the rear air mix control motor is functioning properly.

Cost to Fix B1245

The cost of repairing a short in the rear air mix control motor circuit can vary depending on the extent of the issue and the specific components that need to be replaced. In general, the cost of parts for this repair can range from $100 to $300, while the labor costs can range from $150 to $300. This means that the total cost of repairing this issue can be anywhere from $250 to $600. It's important to note that these are rough estimates and actual costs may vary based on the factors mentioned above.

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Code B1245 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 B1245 Code

1. What are common symptoms of OBDII code B1245 (Short In The Rear Air Mix Control Motor Circuit)?

- Common symptoms include issues with the rear air conditioning system, such as inconsistent temperature control or no air coming out of the rear vents.

2. What can cause OBDII code B1245 to trigger?

- This code is typically triggered by a short circuit in the wiring of the rear air mix control motor or a malfunction within the motor itself.

3. How can I diagnose the cause of OBDII code B1245?

- To diagnose this code, you can use a multimeter to test the resistance of the wiring and the rear air mix control motor. Inspect the wiring for any visible damage or signs of a short circuit.

4. What are the repair options for OBDII code B1245?

- Repair options include repairing or replacing any damaged wiring, fixing the short circuit in the circuit, or replacing the rear air mix control motor if it is faulty.

5. Can I drive my vehicle with OBDII code B1245?

- It is not recommended to drive your vehicle with this code as it may lead to further issues with the rear air conditioning system. It is best to address the problem promptly.

6. How difficult is it to fix OBDII code B1245?

- The difficulty of fixing this code can vary depending on your experience with automotive repairs. If you are comfortable working with electrical systems, you may be able to fix it yourself. Otherwise, it's best to seek professional help.

7. Are there any preventative measures to avoid OBDII code B1245 in the future?

- Regularly inspecting the wiring of the rear air mix control motor and ensuring it is in good condition can help prevent this code from occurring.

8. Will resetting the OBDII code B1245 make it go away permanently?

- Resetting the code will clear it temporarily, but if the underlying issue causing the code is not fixed, it is likely to return.

9. How much does it typically cost to repair OBDII code B1245?

- The cost of repairing this code can vary depending on the extent of the damage and whether you do the repairs yourself or take it to a professional mechanic. Costs may include parts and labor.

10. Can OBDII code B1245 cause any other problems in my vehicle?

- While this code specifically relates to the rear air mix control motor circuit, unresolved issues with the electrical system can potentially lead to other problems in the vehicle over time.

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