Code Definition

C1255 — ABS Inlet Valve Coil RR Circuit Open

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

About C1255

C1255 is a manufacturer-specific chassis diagnostic trouble code recorded for Ford vehicles. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1255 is stored, the module has detected an open (broken or disconnected) electrical path 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.

C1255 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 Anti-lock Brake System (ABS) module energises individual solenoid coils inside the Hydraulic Control Unit (HCU) to modulate brake pressure at each wheel during ABS, traction control, or stability control events. DTC C1255 sets when the ABS module detects an open circuit specifically in the Right Rear (RR) inlet valve coil drive path, meaning the module sees infinite or near infinite resistance when it attempts to energise the coil. The inlet valve normally allows pressurised fluid from the master cylinder into the right rear wheel circuit, and the module checks coil continuity during the k...

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