Code Definition

C0161 — Antilock Braking System Brake Switch Circuit Malfunction

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

About C0161

C0161 is a generic (obd-ii standard) chassis diagnostic trouble code recorded for Holden vehicles. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C0161 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

Because C0161 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 Anti-lock Brake System (ABS) control module monitors the brake switch input to determine brake pedal application for ABS, traction control, and stability system operation. The brake switch confirms when the driver is braking so the module can adjust its strategy and so brake lamp and related functions agree. DTC C0161 is set when the ABS module detects an implausible brake switch signal, a loss of signal, or a mismatch between redundant brake switch inputs for a calibrated period. When this code is set the ABS or stability warning lamp may illuminate, traction and stability features can be...

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