What does B0226 mean on a Chevy?

B0226. Recirculation door command circuit high. The command signal to the recirculation door reads high and the body warning light comes on. Applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

What causes B0226 on a Chevy?

Recirculation door command signal shorted to voltage Failed recirculation door actuator holding the command signal high Open in the recirculation door command return Corroded or loose recirculation door actuator connector Faulty output inside the HVAC control module

How do I fix B0226 on a Chevy?

Confirm the code with a scan tool and command the recirculation door Measure the recirculation door command voltage at the actuator Inspect and reseat the recirculation door actuator connector Test the recirculation door command circuit for a short to voltage Replace the recirculation door actuator only after the circuit tests pass, then clear the code and retest

Code

B0226

Recirculation door command circuit high

Category: Body
Severity: Body Warning Light
Applies to: Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code
Related: No single generic twin. See OBD Codes List

What it means

B0226. Recirculation door command circuit high. The command signal to the recirculation door reads high and the body warning light comes on. This Chevy-enhanced code applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

Findings, check these first

Recirculation door command signal shorted to voltage
Failed recirculation door actuator holding the command signal high
Open in the recirculation door command return
Corroded or loose recirculation door actuator connector
Faulty output inside the HVAC control module

Standard procedure

Confirm the code with a scan tool and command the recirculation door
Measure the recirculation door command voltage at the actuator
Inspect and reseat the recirculation door actuator connector
Test the recirculation door command circuit for a short to voltage
Replace the recirculation door actuator only after the circuit tests pass, then clear the code and retest

Look up another code

Press / to jump to the box. Chevy-enhanced powertrain, body, chassis and network codes.

Sources and review

Review: checked against the recorded source material.

Code B0226 definition | OBDII.pro
live manufacturer definition (obdii.pro)
Supports: GM manufacturer meaning for B0226
Fetched directly. The GM entry is the brand-family meaning used here. This site is independent of engine-codes and autocodes.
B0226 CHEVROLET Recirculate Position Command Circuit High | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: Chevrolet meaning and possible causes for B0226
Fetched directly. Model and year fitment remain curator claims.
B0226 CHEVROLET Recirculate Position Command Circuit High | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Chevrolet meaning and causes for B0226
Same Chevrolet text as the engine-codes page (both sites share one publisher).

Last updated 2026-10-10.

Report a correction for B0226. Include your vehicle, the issue and a source if you have one.