Code Definition

C1456 — Accelerometer Front Circuit Is Not Sensed

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

About C1456

C1456 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 C1456 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.

C1456 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 C1456 fault code indicates the suspension control module is not receiving any signal from the front accelerometer circuit. Where C1455 covers a general circuit failure including out of range or implausible signals, C1456 specifically indicates the signal is absent (typically a flatline at 0V or at the supply rail) suggesting an open circuit, missing reference voltage, or a non responsive sensor. The front accelerometer reports vertical body acceleration at the front of the vehicle, used by the module for adaptive damping calculations. When this code is active, the module has no front body ...

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