Code Definition

C1440 — Pressure Transducer Main / Primary signal Faulted

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

About C1440

C1440 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.

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.

C1440 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 C1440 fault code indicates the ABS or stability control module has detected a faulted signal from the main or primary brake pressure transducer. Where C1288 covers a general input circuit failure (including electrical opens or shorts), C1440 specifically flags that the signal itself is faulted, meaning the module is receiving a signal but it has failed plausibility, rationality, or stuck signal checks. The primary pressure transducer reports master cylinder hydraulic pressure to the ABS module for use in stability control, electronic brake force distribution, hill hold, and panic brake ass...

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

Quick Facts