Code Definition

B0201 — Recirculation Control Circuit

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

About B0201

B0201 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 B0201 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 B0201 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 recirculation air door in the HVAC housing controls whether air entering the cabin is drawn from outside through the cowl intake or recirculated from inside the passenger compartment. The recirculation door is moved by a small bidirectional DC motor actuator fitted with an integral position-feedback potentiometer, and the HVAC control module drives the motor in the commanded direction while monitoring the feedback voltage to confirm the door reaches the target position. DTC B0201 is set when the module detects that the actuator is not responding correctly to its commands — the control or...

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