Code Definition

C1185 — ABS Power Relay Output Circuit Failure

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

About C1185

C1185 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 C1185 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.

C1185 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

This chassis code relates to the ABS power relay, which supplies switched battery voltage to the ABS hydraulic control unit pump motor and valve solenoids. DTC C1185 sets when the ABS control module detects that the relay output circuit is not at the expected voltage, either because the relay fails to deliver power when commanded or because voltage is present when the relay should be off. The module energises the relay and monitors the output feed to confirm the pump and valves have power available before an ABS event. When this code is set the ABS, traction, and stability systems are usually ...

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