Code Definition

B1445 — Door Handle Switch Circuit Short To Ground

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

About B1445

B1445 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 B1445 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) 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.

B1445 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 on some vehicles a dedicated door module, monitors the door handle switch input to detect when the driver actuates the exterior door handle for keyless entry, passive entry, or interior lighting triggering. DTC B1445 is set when the BCM sees the door handle switch signal pulled continuously to ground for longer than any valid handle pull, indicating a short to ground or chassis somewhere in the harness, the switch itself, or the connector. The handle switch typically pulls the BCM input toward ground when operated, so a steady ground reading is interpreted as ...

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