Engine-Codes.com
Engine-Codes – Generic – B1237

B1237 Code - Short In The Passenger Side Air Mix Control Motor Circuit

Quick Answer

The B1237 diagnostic trouble code indicates a short in the passenger side air mix control motor circuit. Common causes include Wiring issues or damaged wiring harness, Faulty air mix control motor, Electrical short in the 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
B1237 indicates Short In The Passenger Side Air Mix Control Motor Circuit.
Common causes
Common causes include Wiring issues or damaged wiring harness, Faulty air mix control motor, Electrical short in the 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 10, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B1237 Description

The B1237 diagnostic trouble code indicates a short in the passenger side air mix control motor circuit. This code is typically associated with the HVAC (Heating, Ventilation, and Air Conditioning) system in the vehicle. The air mix control motor is responsible for regulating the blend of hot and cold air that is directed into the passenger compartment. A short in this circuit can lead to issues with temperature control inside the vehicle.

OBDII Code B1237 - Short In The Passenger Side Air Mix Control Motor Circuit
B1237 Code - Short In The Passenger Side Air Mix Control Motor Circuit

Common Causes of B1237

  1. Wiring issues or damaged wiring harness
  2. Faulty air mix control motor
  3. Electrical short in the circuit
  4. Corrosion or loose connections in the wiring
  5. Environmental factors such as water intrusion or debris causing damage

Symptoms of B1237

  1. Inconsistent temperature output from the HVAC system
  2. Inability to adjust the temperature settings effectively
  3. Strange noises coming from the HVAC system
  4. HVAC system not responding to temperature adjustments
  5. Malfunctioning defrost and defogging capabilities

How to Fix B1237

  1. Diagnose the specific cause of the short in the passenger side air mix control motor circuit using a diagnostic scanner and multimeter.
  2. Inspect the wiring harness and connections for any signs of damage, corrosion, or loose connections.
  3. Replace the air mix control motor if it is determined to be faulty.
  4. Repair or replace any damaged wiring in the circuit.
  5. Clear the diagnostic trouble code from the vehicle's computer system and test the HVAC system to ensure proper functionality.

Cost to Fix B1237

The cost of repairing a short in the passenger side air mix control motor circuit can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $400. Overall, the total repair cost for this issue is likely to fall between $250 and $700. It's important to note that these are rough estimates, and actual costs may vary based on the factors mentioned earlier. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.

Need more information about the B1237 code?

Need more information on how to fix the B1237 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1237 code diagnosed by a professional: Find a repair shop in your area

Code B1237 Information for Specific Makes

  • B1237 Acura — Short In The Passenger Side Air Mix Control Motor Circuit
  • B1237 Honda — Short In The Passenger Side Air Mix Control Motor Circuit
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 B1237 Code

1. What are the common symptoms of OBDII code B1237?

The common symptoms of OBDII code B1237 include issues with the passenger side air mix control motor, such as inconsistent temperature control on the passenger side of the vehicle.

2. What causes the OBDII code B1237 to be triggered?

The OBDII code B1237 is triggered when there is a short in the passenger side air mix control motor circuit. This can be caused by damaged wiring, a faulty motor, or a malfunctioning control module.

3. How can I diagnose the OBDII code B1237?

Diagnosing the OBDII code B1237 involves using a scan tool to retrieve the code, checking the wiring and connectors for any damage, and testing the air mix control motor for proper function.

4. Can I continue driving with the OBDII code B1237 present?

It is not recommended to continue driving with the OBDII code B1237 present, as it can lead to issues with temperature control in the vehicle's HVAC system.

5. How can I repair OBDII code B1237?

To repair OBDII code B1237, you will need to locate and repair the short in the passenger side air mix control motor circuit. This may involve repairing damaged wiring, replacing the air mix control motor, or addressing issues with the control module.

6. Can I fix OBDII code B1237 myself?

Depending on your level of automotive knowledge and experience, you may be able to fix OBDII code B1237 yourself. However, it is recommended to consult a professional mechanic for an accurate diagnosis and repair.

7. Will resetting the OBDII code B1237 make it go away permanently?

Resetting the OBDII code B1237 may temporarily clear the code, but if the underlying issue causing the code is not resolved, it is likely to reappear.

8. Is OBDII code B1237 a serious problem?

While OBDII code B1237 is not a critical issue that affects the overall drivability of the vehicle, it can impact the comfort and functionality of the HVAC system, especially for passengers.

9. How much does it typically cost to repair OBDII code B1237?

The cost to repair OBDII code B1237 can vary depending on the cause of the issue, the extent of the repairs needed, and the labor rates of the repair shop. It is recommended to obtain estimates from different mechanics.

10. Can OBDII code B1237 affect other systems in the vehicle?

OBDII code B1237 specifically relates to the passenger side air mix control motor circuit and is unlikely to directly affect other systems in the vehicle. However, addressing the issue promptly is recommended to prevent any potential issues with the HVAC system.

Discuss the causes and fixes for B1237 OBDII Code

Submit a New Comment

Code B1237 comments

No comments found for this page.