Code Definition

C1145 — Speed Wheel Sensor RF Input Circuit Failure

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

About C1145

C1145 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 C1145 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.

C1145 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 anti lock braking system right front wheel speed sensor input circuit at the ABS control module. DTC C1145 sets when the module detects a failure in the right front sensor circuit, such as an open, a short to ground or power, or a complete loss of signal, so that no valid wheel speed input is received. The wheel speed sensor produces a signal proportional to wheel rotation that the module uses for ABS, traction control, and stability calculations. When this code is set the ABS and stability functions are typically disabled, the warning lamps illuminate, and the...

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