Code Definition

C1289 — Pressure Transducer Redundant / Secondary Input Circuit Failure

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

About C1289

C1289 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 C1289 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.

C1289 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 C1289 fault code indicates that the ABS or stability control module has detected a fault on the redundant or secondary brake pressure transducer input circuit. Many modern brake systems use two pressure transducers (primary and secondary) to provide redundancy for safety-critical stability control and brake assist functions. The secondary transducer allows the ABS module to cross-check the primary signal and continue operation if one sensor fails. This code is set when the secondary signal is out of expected range, missing, or fails a rationality check against the primary transducer. When ...

Join TaT to view the complete code information and diagnostic details.

Quick Facts