AutoCodes – Chevrolet – B0266 Chevrolet

B0266 Chevrolet Code - Air Flow Control 6 Circuit High

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: B0266 Chevrolet indicates Air Flow Control 6 Circuit High.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 941

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B0266 Chevrolet 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 B0266 Chevrolet - Air Flow Control 6 Circuit High - AutoCodes.com — B0266 Chevrolet Code - Air Flow Control 6 Circuit High

What does this mean?

What are the Possible Causes of the DTC B0266 Chevrolet?

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 B0266 Chevrolet?

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 B0266 Chevrolet 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 B0266 Chevrolet code?

Need more information on how to fix the B0266 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0266 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 B0266 Chevrolet Code

1. What are the common symptoms of OBDII code B0266 in a Chevrolet related to Air Flow Control 6 Circuit High?

- Common symptoms include rough idling, loss of power, poor fuel efficiency, and illuminated Check Engine Light.

2. What are the possible causes of OBDII code B0266 in a Chevrolet indicating Air Flow Control 6 Circuit High?

- The code may be triggered by issues like a faulty air flow control actuator, damaged wiring, poor electrical connections, or a defective PCM.

3. How can I diagnose the OBDII code B0266 in my Chevrolet for Air Flow Control 6 Circuit High?

- Diagnosis typically involves using an OBDII scanner to read the code, inspecting the air flow control system components, checking for loose connections, and performing circuit tests.

4. Is it safe to continue driving with OBDII code B0266 indicating Air Flow Control 6 Circuit High in a Chevrolet?

- It is not recommended to drive with this code as it can lead to poor engine performance and potential damage if left unresolved.

5. What are some repair tips for fixing OBDII code B0266 in a Chevrolet related to Air Flow Control 6 Circuit High?

- Repair tips may include replacing the faulty air flow control actuator, repairing damaged wiring, ensuring proper electrical connections, and resetting the code with an OBDII scanner after repairs.

6. Can a DIY enthusiast fix OBDII code B0266 in a Chevrolet for Air Flow Control 6 Circuit High?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code, but it is recommended to seek professional help if unsure.

7. How much does it typically cost to repair OBDII code B0266 in a Chevrolet indicating Air Flow Control 6 Circuit High?

- The repair cost can vary depending on the specific issue causing the code, but it may range from $100-$500 for parts and labor at a repair shop.

8. Will resetting the Check Engine Light resolve OBDII code B0266 in a Chevrolet for Air Flow Control 6 Circuit High?

- Simply resetting the light will not fix the underlying issue causing the code. It is important to diagnose and address the root cause of the problem to prevent recurrence.

9. How long does it usually take to repair OBDII code B0266 in a Chevrolet related to Air Flow Control 6 Circuit High?

- The repair time can vary based on the complexity of the issue, but it may take anywhere from 1-3 hours for a professional mechanic to diagnose and fix the problem.

10. Are there any recalls or technical service bulletins related to OBDII code B0266 in Chevrolet vehicles for Air Flow Control 6 Circuit High?

- It's recommended to check with an authorized Chevrolet dealership or online resources for any relevant recalls or technical service bulletins related to this specific OBDII code.