Code Definition

C1946 — Seat Track Position Switch Circuit Open

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

About C1946

C1946 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 C1946 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

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.

C1946 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 seat track position switch tells the airbag, or SRS, control module whether the driver seat is positioned forward or rearward on its track. The module uses this input to stage front airbag deployment force, reducing deployment energy when the seat is forward and the occupant sits close to the airbag. DTC C1946 sets when the SRS module detects an open circuit in the seat track position switch circuit and can no longer read a valid switch state. When this code is set the airbag warning lamp illuminates and the system typically defaults to a fixed deployment strategy, so the position based st...

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