Code Definition

C1190 — Speed Wheel Sensor LF Input Short Circuit To Battery

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

About C1190

C1190 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 C1190 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) 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.

C1190 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

This chassis code relates to the left front wheel speed sensor circuit, which the ABS control module uses to measure individual wheel rotation for anti lock, traction, and stability control. DTC C1190 sets when the module detects the left front sensor input shorted to battery voltage, meaning a high voltage is present on a signal line that should carry a low level wheel speed signal. Most modern wheel speed sensors are active hall effect or magneto resistive types fed by a low reference and ground, so a short to power saturates the input and prevents a valid speed reading. When this code is se...

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