Code Definition

B1423 — Power Window RR Motor Circuit Open

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

About B1423

B1423 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 B1423 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.

B1423 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 Body Control Module (BCM) or Door Control Module (DCM) monitors current flow through the right rear power window motor each time the window is operated. DTC B1423 is set when the module commands the right rear motor output but detects no current draw, indicating an open circuit somewhere between the module driver, the motor, and the return path. The right rear window motor is a reversible polarity DC motor driven by H bridge style outputs in the BCM or rear door module, and the module relies on current feedback to verify the circuit is intact. When this code is set, the right rear window w...

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