Code Definition

B1269 — Servo Motor Potentiometer Defrost Circuit Open

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

About B1269

B1269 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 B1269 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

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.

B1269 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 position of the defrost mode door using a potentiometer built into the defrost servo motor. The module supplies a 5V reference and ground to the potentiometer, then reads a wiper voltage that varies with door angle. DTC B1269 is set specifically when the module sees the feedback wiper voltage pulled to the full 5V reference value with no current flowing, the signature of an open circuit somewhere in the potentiometer reference, ground, or wiper return path. The defrost door directs HVAC airflow up to the windscreen vents, so when this code is set the dem...

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