Code Definition

C1959 — Lateral Accelerometer Sensor Circuit Failure

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

About C1959

C1959 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 C1959 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.

C1959 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 lateral accelerometer measures side to side cornering force, or lateral g, and reports it to the stability control module, which compares it against steering angle, yaw rate, and wheel speed to detect understeer and oversteer. It is often part of a combined yaw and g sensor cluster. Unlike a specific open circuit code, DTC C1959 is a general lateral accelerometer circuit failure, set when the module detects an electrical fault such as a short, an implausible or out of range signal, a loss of sensor communication, or an internal sensor fault. When this code is set the stability and traction...

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