Code Definition

B1266 — Servo Motor Airintake Left Circuit Failure

System: Body  |  Type: Manufacturer-Specific  |  Make: Generic

About B1266

B1266 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1266 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.

B1266 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The climate control module monitors the left air intake servo motor through bidirectional drive lines and a position feedback signal from an internal potentiometer. DTC B1266 is set when the module commands the servo to move the left air intake door but does not see the expected feedback voltage change, sees a feedback value outside the valid range, or detects an electrical short or open on the motor command circuit. The left air intake servo positions the recirculation flap on the left side of the HVAC case to select between fresh outside air and recirculated cabin air. When this code is set,...

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