Code Definition

B1301 — Power Door Lock Circuit Open

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

About B1301

B1301 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 B1301 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.

B1301 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 dedicated Door Control Module drives the power door lock actuators by switching battery voltage and ground onto the lock and unlock control wires running into each door. DTC B1301 sets when the controlling module commands a door lock or unlock cycle but detects no current flow on the affected lock circuit, indicating an open between the module driver and the actuator motor. The most common location for this open is in the harness section that flexes inside the rubber boot between the body and the door frame, where conductors fatigue and break with repeated door...

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