Code Definition

C1937 — Steering Wheel Angle Sensor Offset Failure

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

About C1937

C1937 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 C1937 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.

C1937 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 wheel angle sensor (SAS) reports steering position and rate of turn to the stability control system (ESP, ESC, or DSC), which compares driver steering input against vehicle yaw and lateral acceleration to detect a loss of control. The system requires a learned zero point, or offset, that defines the straight ahead position. DTC C1937 sets when the control module cannot establish or accept a valid steering angle offset, for example because the calibration has not been performed after a repair, the sensor reports an implausible centre value, or the sensor signal is faulty. When this...

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