Code Definition

B3849 — Driver Exterior Door Handle Switch Circuit Short to Ground

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

About B3849

B3849 is a manufacturer-specific body diagnostic trouble code recorded for Holden vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B3849 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.

B3849 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) monitors the driver exterior door handle switch circuit to detect valid door handle actuation for central locking and keyless entry functions. On passive entry systems this switch or sensor in the handle signals a lock or unlock request to the BCM when the handle is touched or pressed. DTC B3849 is set when the BCM detects the switch signal circuit pulled to ground with no switch activation commanded, or held grounded beyond the calibrated time, indicating a short to ground. When this code is set the driver may find keyless lock or unlock from the driver handle in...

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