AutoCodes – GMC – B0267 GMC

B0267 GMC Code - Air Flow Control 6 Circuit Open

Quick Answer

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. Common causes include Faulty Mode Actuator, Mode Actuator harness is open or shorted, Mode Actuator circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0267 GMC indicates Air Flow Control 6 Circuit Open.
Common causes: Common causes include Faulty Mode Actuator, Mode Actuator harness is open or shorted, Mode Actuator circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 820

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0267 GMC Description

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. With the switches and dials on the HVAC controls, air temperature door position, mode door position and recirculation door position can be selected. The selected values are passed to the Heating, Ventilation, and Air Conditioning (HVAC) Control Module via serial data. The HVAC control module supplies a 12 V reference voltage to the stepper motors and energizes the 4 stepper motor coils with a pulsed ground signal. The stepper motors move the appropriate doors into the calculated positions, in order to reach the desired positions.

OBDII Code B0267 GMC - Air Flow Control 6 Circuit Open - AutoCodes.com — B0267 GMC Code - Air Flow Control 6 Circuit Open

What does this mean?

What are the Possible Causes of the DTC B0267 GMC?

Faulty Mode Actuator
Mode Actuator harness is open or shorted
Mode Actuator circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0267 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0267 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B0267 GMC code?

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Need Help with the Code?

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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 B0267 GMC Code

1. What are the common symptoms of OBDII code B0267 GMC (Air Flow Control 6 Circuit Open)?

- Common symptoms include poor engine performance, rough idling, reduced fuel efficiency, and potential stalling.

2. What are the possible causes of OBDII code B0267 GMC (Air Flow Control 6 Circuit Open)?

- Potential causes include a faulty air flow control actuator, wiring issues, connector problems, or a malfunctioning powertrain control module (PCM).

3. How can I diagnose the cause of OBDII code B0267 GMC (Air Flow Control 6 Circuit Open)?

- Diagnosis typically involves checking the wiring and connectors related to the air flow control actuator, testing the actuator itself, and using a scan tool to communicate with the PCM.

4. Can I still drive my vehicle with OBDII code B0267 GMC (Air Flow Control 6 Circuit Open) present?

- It is generally not recommended to drive with this code present, as it can lead to further damage and potential safety issues due to poor engine performance.

5. How can I repair OBDII code B0267 GMC (Air Flow Control 6 Circuit Open)?

- Repair options may include replacing the faulty air flow control actuator, repairing or replacing damaged wiring or connectors, or reprogramming the PCM if necessary.

6. Will resetting the OBDII code B0267 GMC (Air Flow Control 6 Circuit Open) make the issue go away?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code to appear. Proper diagnosis and repair are necessary.

7. Are there any DIY tips for addressing OBDII code B0267 GMC (Air Flow Control 6 Circuit Open)?

- DIY tips may include checking the wiring and connectors for visible damage, ensuring proper connections, and referring to the vehicle's service manual for specific repair procedures.

8. Is OBDII code B0267 GMC (Air Flow Control 6 Circuit Open) a common issue in GMC vehicles?

- While not as common as some other OBDII codes, the Air Flow Control 6 Circuit Open can still occur in GMC vehicles, especially in older models or those with high mileage.

9. Can a mechanic easily fix OBDII code B0267 GMC (Air Flow Control 6 Circuit Open)?

- A qualified mechanic with experience in diagnosing and repairing electrical issues should be able to address OBDII code B0267 GMC effectively.

10. What happens if OBDII code B0267 GMC (Air Flow Control 6 Circuit Open) is left untreated?

- Leaving this code untreated can lead to continued poor engine performance, potential damage to other components, and may result in the vehicle failing emissions tests.