Code Definition

B1442 — Door Handle Switch Circuit Failure

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

About B1442

B1442 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 B1442 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.

B1442 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 circuit to detect when the driver actuates the exterior door handle for keyless entry, passive entry, or interior dome lamp triggering. DTC B1442 is set when the BCM identifies an electrical failure in the door handle switch circuit, such as an open circuit, a short to power or ground, or a signal voltage that remains outside the valid input range for an extended period. Door handle switches are typically capacitive sensors or microswitches integrated into the handle assembly, with a sig...

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