Code Definition

C1943 — Airbag Deployment Indication Input Fault

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

About C1943

C1943 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.

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.

C1943 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

After a collision the airbag, or SRS, control module sends a deployment indication signal to other control modules so they can perform post crash functions such as cutting the fuel pump, unlocking the doors, switching on the hazard lamps, and disabling selected systems. The signal may be a hard wired crash output or a network message. DTC C1943 sets when the receiving module detects a fault on the airbag deployment indication input, such as an open, a short, an implausible level, or loss of the expected message from the SRS module. When this code is set the affected post crash safety functions...

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