Code Definition

B0268 — Air Inlet door circuit malfunction

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About B0268

B0268 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B0268 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

Because B0268 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The HVAC control module operates the air inlet (recirculation/fresh) door actuator to switch the heater box intake between outside fresh air and recirculated cabin air, and monitors the actuator's feedback signal to confirm correct positioning. The actuator is a small reversible DC motor with an internal feedback potentiometer or hall sensor. DTC B0268 sets when the module detects an electrical malfunction on the actuator drive or feedback circuit — open, shorted, high-resistance, or a stalled motor that fails to reach the commanded stop. With this code active, the recirculation function may...

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