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B1235 Acura Code - Problem In The Driver Side Air Mix Control Linkage, Door, Or Motor Circuit

Quick Answer

The B1235 code for Acura vehicles indicates a problem in the driver side air mix control linkage, door, or motor circuit. Common causes include Faulty driver side air mix control motor, Damaged or misaligned air mix control linkage, Electrical issues in the circuit connecting the components. 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
B1235 Acura indicates Problem In The Driver Side Air Mix Control Linkage, Door, Or Motor Circuit.
Common causes
Common causes include Faulty driver side air mix control motor, Damaged or misaligned air mix control linkage, Electrical issues in the circuit connecting the components.
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 B1235 Acura Description

The B1235 code for Acura vehicles indicates a problem in the driver side air mix control linkage, door, or motor circuit. This code typically points to an issue with the components responsible for controlling the temperature of the air coming out of the HVAC system on the driver's side of the vehicle. The air mix control system is essential for maintaining a comfortable cabin temperature by adjusting the blend of hot and cold air.

OBDII Code B1235 Acura - Problem In The Driver Side Air Mix Control Linkage, Door, Or Motor Circuit
B1235 Acura Code - Problem In The Driver Side Air Mix Control Linkage, Door, Or Motor Circuit

Common Causes of B1235 Acura

  1. Faulty driver side air mix control motor
  2. Damaged or misaligned air mix control linkage
  3. Electrical issues in the circuit connecting the components
  4. Failed driver side air mix control door
  5. Issues with the HVAC control module

Symptoms of B1235 Acura

  1. Inconsistent temperature output on the driver's side
  2. Inability to adjust the temperature settings
  3. Unusual noises coming from the HVAC system
  4. Air blowing out at a different temperature than selected
  5. HVAC system not responding to temperature changes

How to Fix B1235 Acura

  1. Begin by diagnosing the specific component causing the issue using a scan tool.
  2. Inspect the driver side air mix control motor, linkage, and door for any signs of damage or malfunction.
  3. Test the electrical connections in the circuit to ensure proper voltage and continuity.
  4. Replace the faulty component, whether it be the motor, linkage, or door.
  5. Clear the diagnostic trouble codes and test the HVAC system to verify that the issue has been resolved.

Cost to Fix B1235 Acura

The typical repair costs for addressing a B1235 code in an Acura vehicle can vary depending on the specific component that needs to be replaced and the labor rates in your area. However, as a rough estimate, you can expect to pay anywhere from $150 to $400 for parts and labor. Keep in mind that additional diagnostic time may be required to pinpoint the exact cause of the issue, so it's essential to consult with a qualified mechanic for an accurate cost estimate. Labor rates at auto repair shops can range from $80 to $150 per hour, so it is advisable to inquire about local rates for a more precise 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 B1235 Acura Code

1. What are the common symptoms of OBDII code B1235 in an Acura related to the driver side air mix control linkage, door, or motor circuit?

The common symptoms include issues with temperature control on the driver side, inconsistent heating or cooling, or no air coming from the vents on the driver side.

2. What could be the potential causes of OBDII code B1235 in an Acura?

The code B1235 can be triggered by a faulty driver side air mix control linkage, a malfunctioning door in the HVAC system, or a problem with the motor circuit controlling the air mix.

3. How can I diagnose the problem causing OBDII code B1235 in my Acura?

Diagnosing the issue may involve checking the driver side air mix control linkage for any obstructions or damage, inspecting the door in the HVAC system for proper operation, and testing the motor circuit for continuity and functionality.

4. Can I repair OBDII code B1235 in my Acura by myself, or do I need professional help?

The complexity of the repair depends on the specific cause of the code. Simple issues like a stuck linkage may be fixable by a DIY enthusiast, while more complex problems with the motor circuit may require professional assistance.

5. Are there any quick tips for troubleshooting OBDII code B1235 in my Acura before taking it to a mechanic?

You can start by checking the driver side air mix control settings, ensuring the air vents are not blocked, and listening for any unusual sounds coming from the HVAC system when adjusting the temperature.

6. How urgent is it to address OBDII code B1235 in an Acura?

While the code may not pose an immediate safety risk, it is important to address it promptly to maintain proper climate control in the vehicle, especially in extreme weather conditions.

7. Is it safe to continue driving my Acura with OBDII code B1235 present?

It is generally safe to drive the vehicle with this code, but you may experience discomfort due to inconsistent temperature control or lack of airflow on the driver side.

8. What are the typical repair costs associated with fixing OBDII code B1235 in an Acura?

The repair costs can vary depending on the exact cause of the issue. Simple fixes like repositioning a linkage may be inexpensive, while replacing a faulty motor circuit could be more costly.

9. Will resetting the OBDII code B1235 in my Acura make the issue go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying problem is not addressed, the code is likely to reappear.

10. How can I prevent OBDII code B1235 from reoccurring in my Acura?

Regular maintenance of the HVAC system, checking for any signs of wear or damage in the air mix control components, and addressing any issues promptly can help prevent the code from reoccurring.

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