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Engine-Codes – Honda – B1236 Honda

B1236 Honda Code - Open In The Passenger Side Air Mix Control Motor Circuit

Quick Answer

The B1236 code for Honda vehicles indicates that there is an open circuit in the passenger side air mix control motor circuit. Common causes include Faulty air mix control motor, Damaged wiring or connectors in the circuit, Blown fuse related to the 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
B1236 Honda indicates Open In The Passenger Side Air Mix Control Motor Circuit.
Common causes
Common causes include Faulty air mix control motor, Damaged wiring or connectors in the circuit, Blown fuse related to the 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 19, 2024
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Code B1236 Honda Description

The B1236 code for Honda vehicles indicates that there is an open circuit in the passenger side air mix control motor circuit. This means that there is a problem with the circuit that controls the air mix in the HVAC system on the passenger side of the vehicle. The air mix control motor is responsible for adjusting the temperature of the air coming out of the vents, and an open circuit can prevent it from functioning properly. This can result in the passenger side of the vehicle not receiving the desired temperature of air, leading to discomfort for passengers. If left untreated, this issue can impact the overall functionality of the HVAC system and may cause further damage to other components.

OBDII Code B1236 Honda - Open In The Passenger Side Air Mix Control Motor Circuit
B1236 Honda Code - Open In The Passenger Side Air Mix Control Motor Circuit

Common Causes of B1236 Honda

  1. Faulty air mix control motor.
  2. Damaged wiring or connectors in the circuit.
  3. Blown fuse related to the air mix control motor.
  4. Issues with the HVAC control module.
  5. Environmental factors causing corrosion or damage to the circuit components.

Symptoms of B1236 Honda

  1. Uneven temperature distribution between the driver and passenger sides.
  2. Inconsistent or incorrect temperature settings despite adjustments.
  3. Lack of airflow or weak airflow from the passenger side vents.
  4. Unusual noises coming from the HVAC system.
  5. HVAC system not responding to temperature adjustments.

How to Fix B1236 Honda

  1. Begin by diagnosing the specific cause of the open circuit, such as testing the air mix control motor and checking the wiring and connectors for damage.
  2. Replace the faulty air mix control motor if necessary.
  3. Repair or replace any damaged wiring or connectors in the circuit.
  4. Check and replace any blown fuses related to the air mix control motor.
  5. Reset the HVAC system and test to ensure that the issue has been resolved.

Cost to Fix B1236 Honda

The cost of repairing an open in the passenger side air mix control motor circuit can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $150 and $400 for parts and labor. Keep in mind that diagnostic time and labor rates can impact the final cost, so it's best to consult with a trusted auto repair shop for a more accurate estimate. Additionally, prices may differ based on the make and model of your vehicle.

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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 B1236 Honda Code

1. What are the common symptoms of OBDII code B1236 in a Honda related to an open in the passenger side air mix control motor circuit?

The common symptoms include inconsistent or lack of temperature control on the passenger side, unusual air conditioning performance, and potential issues with the dual-zone climate control system.

2. What are the possible causes of the OBDII code B1236 in a Honda?

The code B1236 indicates an open in the passenger side air mix control motor circuit, which can be caused by a faulty air mix control motor, damaged wiring or connectors, or a malfunctioning climate control module.

3. How can I diagnose the issue related to OBDII code B1236 in my Honda?

To diagnose the problem, you can use a scan tool to retrieve the specific fault code, visually inspect the wiring and connectors for any damage, test the air mix control motor for proper function, and check the climate control module for any faults.

4. What are some repair tips for fixing the open in the passenger side air mix control motor circuit issue in a Honda?

Repair tips include checking and repairing any damaged wiring or connectors, replacing the faulty air mix control motor if needed, and resetting the climate control module after making necessary repairs.

5. Is it safe to continue driving my Honda with the OBDII code B1236 present?

It is not recommended to continue driving your Honda with the B1236 code, as it can lead to further issues with the climate control system and affect the comfort of passengers in the vehicle.

6. Can I reset the OBDII code B1236 in my Honda without fixing the underlying issue?

While you can clear the code temporarily, it will likely reappear until the root cause of the open in the passenger side air mix control motor circuit is addressed and resolved.

7. How long does it typically take to repair the open in the passenger side air mix control motor circuit issue in a Honda?

The repair time can vary depending on the extent of the damage and the availability of replacement parts, but it usually takes a few hours to diagnose and fix the problem.

8. Will fixing the OBDII code B1236 in my Honda require professional help, or can I do it myself?

Depending on your experience and comfort level with automotive repairs, you may be able to fix the issue yourself by following diagnostic steps and repair guides. However, seeking professional help is recommended for complex electrical issues.

9. Are there any preventive measures I can take to avoid encountering the OBDII code B1236 in my Honda in the future?

Regularly inspecting the climate control system, checking for any signs of wiring damage, and addressing any temperature control issues promptly can help prevent the occurrence of the B1236 code in the future.

10. Will fixing the open in the passenger side air mix control motor circuit improve the overall performance of my Honda's climate control system?

Yes, resolving the issue related to the B1236 code will restore proper functionality to the passenger side air mix control motor, ensuring consistent temperature control and optimal performance of the climate control system in your Honda.

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