Code Definition

C1168 — Speed Wheel Sensor RR Coherency Fault

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

About C1168

C1168 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 C1168 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

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.

C1168 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 code relates to the brake pedal position sensor circuit, the sensor that reports how far the brake pedal is being pressed to the chassis control module, typically the ABS, stability control, or electronic brake booster unit. Unlike a simple stop lamp switch, this sensor provides a variable signal, usually an analog voltage or a digital position value, allowing the module to judge how hard and how quickly the driver is braking for functions such as brake assist, regenerative braking blending, and adaptive cruise control. DTC C1168 sets when the module detects an electrical failure in the s...

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