Code Definition

B2170 — Steering Column Lock Switch Circuit Failure

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About B2170

B2170 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B2170 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.

Because B2170 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The Body Control Module (BCM) monitors the Steering Column Lock Switch, which provides position feedback confirming that the steering column lock pin has engaged or disengaged the steering shaft. DTC B2170 is set when the BCM detects an electrical fault in the lock switch circuit, such as an open, short to ground, short to power, or a signal state that does not match the commanded lock position. The steering column lock is a security feature that physically immobilises the steering shaft when the ignition is off and releases it on a valid key authorisation, with the switch confirming the mecha...

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