Code Definition

B1352 — Ignition Key-In Circuit Failure

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

About B1352

B1352 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 B1352 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.

B1352 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 input that signals when the key has been inserted into the lock cylinder. The circuit relies on a switch inside the steering column that changes state with key presence, and the BCM uses this signal to drive the key reminder chime, manage interior illumination timing, and coordinate with theft and convenience features. DTC B1352 is a general circuit failure code that sets when the BCM detects the key in input is behaving abnormally, which can include an open circuit, an out of range voltage, or a state that does not correspond to the ex...

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