Code Definition

C1445 — Speed Vehicle Signal Circuit Failure

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

About C1445

C1445 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 C1445 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.

C1445 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 C1445 fault code indicates the chassis or stability control module has detected a fault on the vehicle speed signal (VSS) circuit. The vehicle speed signal is a critical input shared by multiple modules including the ABS, transmission, instrument cluster, and engine management for use in speed limiting, cruise control, shift timing, and stability calculations. Depending on platform, the signal is sourced from either a dedicated transmission output shaft sensor, an ABS wheel speed sensor combined signal, or a calculated value broadcast over the vehicle network. This code is set when the cha...

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