Code Definition

C1173 — Park Brake Switch # 1 Released Circuit Short to Gnd

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

About C1173

C1173 is a manufacturer-specific chassis diagnostic trouble code. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1173 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit.

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.

C1173 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 park brake switch released circuit is monitored by a chassis control module, commonly the ABS/EBCM, instrument cluster, or body control module depending on the platform. The park brake switch reports whether the parking brake is applied or released, and this status is used for warning lamp operation, hill hold, auto vehicle hold, and certain stability and driveaway functions. DTC C1173 sets when the module detects that the released side of park brake switch number 1 is shorted to ground, meaning the circuit reads a voltage below the expected threshold or indicates released continuously whe...

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