AutoCodes – GMC – B0264 GMC

B0264 GMC Code - Air Flow Control 6 Circuit Range/Performance

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: B0264 GMC indicates Air Flow Control 6 Circuit Range/Performance.
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 877

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 B0264 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 B0264 GMC - Air Flow Control 6 Circuit Range/Performance - AutoCodes.com — B0264 GMC Code - Air Flow Control 6 Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC B0264 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 B0264 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 B0264 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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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 B0264 GMC Code

1. What are the common symptoms of OBDII code B0264 GMC (Air Flow Control 6 Circuit Range/Performance)?

The common symptoms of code B0264 GMC may include engine stalling, poor acceleration, rough idling, and decreased fuel efficiency.

2. What are the possible causes of OBDII code B0264 GMC?

Possible causes of code B0264 GMC include a faulty air flow control actuator, wiring issues, a malfunctioning ECM (Engine Control Module), or a vacuum leak in the intake system.

3. How can I diagnose OBDII code B0264 GMC?

Diagnosing code B0264 GMC involves using a diagnostic scanner to retrieve the code, performing visual inspections of related components, checking the wiring for any damage, and testing the air flow control actuator and associated circuits for proper operation.

4. What are some repair tips for fixing OBDII code B0264 GMC?

Repair tips for resolving code B0264 GMC may include replacing the faulty air flow control actuator, repairing any damaged wiring or connectors, checking and repairing any vacuum leaks, and clearing the code with a diagnostic scanner after the repairs are completed.

5. Can I drive my vehicle with OBDII code B0264 GMC active?

It is not recommended to drive your vehicle with an active OBDII code B0264 GMC, as it can lead to further damage to the engine or emissions system. It is best to address the issue promptly to prevent any potential safety hazards.

6. How much does it cost to repair OBDII code B0264 GMC?

The cost of repairing OBDII code B0264 GMC can vary depending on the underlying cause of the issue, the labor rates in your area, and whether you choose to DIY or take your vehicle to a professional mechanic. It's advisable to obtain quotes from different repair shops for an accurate estimate.

7. Will resetting the ECM clear OBDII code B0264 GMC?

Resetting the ECM may temporarily clear the code, but if the underlying issue causing code B0264 GMC is not addressed, the code is likely to return. It's important to diagnose and repair the root cause of the problem to prevent further issues.

8. How long does it take to repair OBDII code B0264 GMC?

The time it takes to repair OBDII code B0264 GMC can vary depending on the complexity of the issue, the availability of parts, and the skill level of the person performing the repairs. In general, it may take a few hours to a full day to diagnose and fix the problem.

9. Can a DIY enthusiast fix OBDII code B0264 GMC at home?

Depending on the DIYer's skill level and access to tools, it may be possible to fix OBDII code B0264 GMC at home. However, it's essential to have the necessary knowledge and resources to diagnose and repair the issue correctly to avoid any further complications.

10. Is OBDII code B0264 GMC a serious issue?

OBDII code B0264 GMC (Air Flow Control 6 Circuit Range/Performance) should be addressed promptly to prevent potential drivability issues and further damage to the vehicle. Ignoring the code can lead to decreased performance, increased fuel consumption, and potentially more costly repairs down the line.