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

Quick Answer

The B1245 code for Honda vehicles indicates a short in the rear air mix control motor circuit. Common causes include Faulty rear air mix control motor, Wiring issues or short circuits in the rear air mix control motor circuit, Loose or corroded electrical connections in the rear HVAC system. 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 Honda indicates Short In The Rear Air Mix Control Motor Circuit.
Common causes
Common causes include Faulty rear air mix control motor, Wiring issues or short circuits in the rear air mix control motor circuit, Loose or corroded electrical connections in the rear HVAC system.
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 19, 2024
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Code B1245 Honda Description

The B1245 code for Honda vehicles indicates a short in the rear air mix control motor circuit. This means that there is a malfunction in the system that controls the air mix ratio in the rear HVAC system of the vehicle. The air mix control motor is responsible for adjusting the temperature of the air that comes out of the rear vents. A short in this circuit can lead to improper temperature control and affect the comfort level of passengers in the rear seats.

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

Common Causes of B1245 Honda

  1. Faulty rear air mix control motor
  2. Wiring issues or short circuits in the rear air mix control motor circuit
  3. Loose or corroded electrical connections in the rear HVAC system
  4. Defective HVAC control module
  5. Electrical issues in the vehicle's overall electrical system

Symptoms of B1245 Honda

  1. Inconsistent or incorrect temperature output from the rear vents
  2. Inability to adjust the temperature settings in the rear HVAC system
  3. Unresponsive rear air conditioning or heating controls
  4. Strange noises coming from the rear HVAC system
  5. Malfunction indicator light (MIL) illuminated on the dashboard

How to Fix B1245 Honda

  1. Begin by diagnosing the specific cause of the short in the rear air mix control motor circuit using a diagnostic scanner.
  2. Inspect the wiring and connections in the rear HVAC system for any damage or loose connections.
  3. Test the rear air mix control motor for proper operation and replace if necessary.
  4. Repair or replace any damaged wiring or electrical components in the circuit.
  5. Clear the diagnostic trouble codes and test the rear HVAC system to ensure proper functionality.

Cost to Fix B1245 Honda

The typical repair costs for addressing a short in the rear air mix control motor circuit in a Honda vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost for parts and labor to resolve this issue can range from $150 to $500. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is recommended to obtain quotes from multiple sources to get a more accurate estimate.

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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 Honda Code

1. What are common symptoms of OBDII code B1245 in a Honda related to a 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 the inability to adjust the air mix.

2. What typically causes OBDII code B1245 in a Honda indicating a short in the rear air mix control motor circuit?

- This code is often triggered by a short circuit in the wiring harness, a malfunctioning air mix control motor, or a faulty control module.

3. How can I diagnose OBDII code B1245 in my Honda if I suspect a short in the rear air mix control motor circuit?

- Diagnosis involves inspecting the wiring harness for any visible damage, testing the air mix control motor for proper operation, and checking the control module for faults.

4. Are there any repair tips for addressing OBDII code B1245 related to a short in the rear air mix control motor circuit in a Honda?

- Repair tips include repairing or replacing damaged wiring, replacing the faulty air mix control motor, and reprogramming or replacing the control module as needed.

5. Can OBDII code B1245 in a Honda related to a short in the rear air mix control motor circuit be fixed without professional help?

- While some DIY enthusiasts may be able to address this issue, it is recommended to seek professional assistance for accurate diagnosis and proper repair to avoid further damage.

6. Is it safe to continue driving my Honda with OBDII code B1245 indicating a short in the rear air mix control motor circuit?

- It is not recommended to drive the vehicle with this code unresolved, as it can lead to potential issues with the rear air conditioning system and affect overall comfort and safety.

7. How much does it typically cost to repair OBDII code B1245 in a Honda due to a short in the rear air mix control motor circuit?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced, but it may range from a few hundred to over a thousand dollars.

8. Will resetting the OBDII code B1245 in my Honda make the issue related to the rear air mix control motor circuit go away?

- Simply resetting the code without addressing the underlying cause, such as a short in the circuit, will not resolve the issue, and the code is likely to reappear once the problem persists.

9. Are there any preventive measures to avoid encountering OBDII code B1245 in a Honda due to a short in the rear air mix control motor circuit?

- Regular maintenance checks, prompt repair of any wiring issues, and ensuring proper functioning of the air mix control components can help prevent this code from appearing.

10. Can a faulty rear air mix control motor in a Honda trigger other OBDII codes besides B1245 related to a short in the circuit?

- Yes, a malfunctioning rear air mix control motor can potentially trigger other related codes, such as those indicating motor performance issues or communication failures with the control module.

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