Code Definition

C1955 — Steering Angle Sensor Circuit Open

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

About C1955

C1955 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 C1955 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit; and 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.

C1955 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 steering angle sensor reports the position and rate of steering wheel movement to the stability control module, which uses it together with yaw rate, lateral acceleration, and wheel speed to judge whether the vehicle is following the driver intended path. The sensor sits at the base of the steering column and often communicates on a local data bus. DTC C1955 sets when the module detects an open circuit in the steering angle sensor circuit, losing the signal, supply, ground, or communication line so it cannot read steering angle. When this code is set the stability and traction control func...

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