Code Definition

B097B — Power mode start switch circuit short to ground

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

About B097B

B097B 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 B097B 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.

Because B097B 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 control module sets DTC B097B when it detects a short to ground in the power mode start switch circuit. The power mode switch is the push button start control that tells the module which ignition state the driver has selected, off, accessory, on, or start. A short to ground holds the signal line consistently low, so the module reads the switch as pressed or sees an invalid state that does not match driver input. When this fault is present the vehicle may fail to change power modes correctly, refuse to start or stop, or set related no start and ignition faults.

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