AutoCodes – GMC – B0268 GMC

B0268 GMC Code - Air Flow Control 7 Circuit

Quick Answer

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. Common causes include Faulty Recirculation Actuator, Recirculation Actuator harness is open or shorted, Recirculation 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: B0268 GMC indicates Air Flow Control 7 Circuit.
Common causes: Common causes include Faulty Recirculation Actuator, Recirculation Actuator harness is open or shorted, Recirculation 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 2,094

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 B0268 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 B0268 GMC - Air Flow Control 7 Circuit - AutoCodes.com — B0268 GMC Code - Air Flow Control 7 Circuit

What does this mean?

What are the Possible Causes of the DTC B0268 GMC?

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

How to Fix the DTC B0268 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 B0268 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.

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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 B0268 GMC Code

1. What are the common symptoms of OBDII code B0268 GMC (Air Flow Control 7 Circuit)?

- Common symptoms include engine stalling, rough idling, decreased fuel efficiency, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code B0268 GMC?

- The code B0268 GMC (Air Flow Control 7 Circuit) can be caused by issues such as a faulty air flow control valve, wiring problems, or a damaged air flow sensor.

3. How can I diagnose the OBDII code B0268 GMC?

- To diagnose the code B0268 GMC, you can use an OBDII scanner to retrieve the specific error code and then inspect the air flow control components for any visible damage or issues.

4. What should I check first when troubleshooting OBDII code B0268 GMC?

- It is recommended to first check the wiring and connections related to the air flow control system, as loose connections or damaged wires can often trigger this error code.

5. Can I drive my vehicle with OBDII code B0268 GMC?

- It is not recommended to drive your vehicle with the code B0268 GMC present, as it can lead to further damage and potentially unsafe driving conditions.

6. How can I repair OBDII code B0268 GMC?

- Repairing the code B0268 GMC may involve replacing the faulty air flow control valve, repairing any damaged wiring, or cleaning/replacing the air flow sensor.

7. Are there any DIY tips for fixing OBDII code B0268 GMC?

- While some simple troubleshooting steps can be done at home, it is recommended to consult a qualified mechanic for proper diagnosis and repair of the code B0268 GMC.

8. Can a dirty air filter trigger the OBDII code B0268 GMC?

- Yes, a dirty air filter can restrict airflow and potentially lead to issues with the air flow control system, triggering the code B0268 GMC.

9. Is resetting the OBDII system enough to fix the code B0268 GMC temporarily?

- Resetting the OBDII system may temporarily clear the code B0268 GMC, but if the underlying issue is not addressed, the code is likely to reappear.

10. How much does it typically cost to repair OBDII code B0268 GMC at a mechanic?

- The cost of repairing the code B0268 GMC can vary depending on the specific issue, but it may range from $100 to $500 or more, including parts and labor.