AutoCodes – GMC – B0226 GMC

B0226 GMC Code - Recirculate Position Command Circuit High

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: B0226 GMC indicates Recirculate Position Command Circuit High.
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 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 B0226 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 B0226 GMC - Recirculate Position Command Circuit High - AutoCodes.com — B0226 GMC Code - Recirculate Position Command Circuit High

What does this mean?

What are the Possible Causes of the DTC B0226 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 B0226 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 B0226 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 B0226 GMC Code

1. What does the OBDII code B0226 mean on a GMC vehicle?

The code B0226 indicates a problem with the Recirculate Position Command Circuit, specifically that the circuit voltage is higher than expected.

2. What are the common symptoms of the B0226 code in a GMC?

Symptoms may include the HVAC system being stuck in a specific air circulation mode, unusual noises from the blend door actuator, or an inability to switch to recirculated air.

3. What causes the B0226 code to appear in GMC vehicles?

Common causes include a faulty recirculation door actuator, damaged wiring or connectors in the circuit, or issues with the HVAC control module.

4. Can I drive my GMC with a B0226 code?

Yes, you can usually drive with this code, but it may affect your HVAC system's ability to properly control air circulation, which can impact comfort and air quality inside the vehicle.

5. How do I diagnose the B0226 code in a GMC?

Diagnosis involves inspecting the recirculation door actuator, checking the wiring and connectors for damage, and testing the voltage and resistance in the Recirculate Position Command Circuit.

6. What is the recirculation door actuator, and how does it relate to code B0226?

The recirculation door actuator controls air movement inside the HVAC system. If it fails or malfunctions, it can cause incorrect circuit readings, triggering the B0226 code.

7. How can I fix the B0226 code on my GMC?

Repairs may include replacing the recirculation door actuator, repairing damaged wiring or connectors, or reprogramming or replacing the HVAC control module if necessary.

8. How much does it cost to fix the B0226 code on a GMC?

The cost depends on the exact issue but typically ranges from $150 to $500, including parts and labor for actuator replacement or wiring repairs.

9. Can a bad HVAC control module cause the B0226 code?

Yes, a malfunctioning HVAC control module can send incorrect signals, leading to the B0226 code.

10. How can I prevent the B0226 code from recurring in my GMC?

Regularly inspect and maintain the HVAC system, including the actuators and wiring, and ensure proper operation of the recirculation door to prevent future issues.