Code Definition

B1351 — Ignition Key-In Circuit Short To Battery

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

About B1351

B1351 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 B1351 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.

B1351 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 an ignition key in circuit that signals when the ignition key has been physically inserted into the lock cylinder. This input is typically provided by a switch inside the steering column that grounds the circuit when the key is present, and the BCM uses the signal to trigger the key reminder chime, control interior illumination timing, and arm or disarm related theft and convenience features. DTC B1351 sets when the BCM detects that the key in input is held at battery voltage continuously, which is interpreted as a short to battery on the circuit rather t...

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