FixVault

DTC C1783 Speed Signal Communication Error: Description

The speed sensors monitors the speed of the wheels, and sends an appropriate speed signals to the suspension control ECU through the skid control ECU. If trouble occurs in either the front speed sensor or rear speed sensor, DTC (C1783) is output.

DTC TROUBLE CODE CHART

DTC Code Detection Condition Trouble Area
C1783/83 Speed sensor circuit malfunction for 1 second or more.
  • Speed sensor
  • Skid control ECU
  • Suspension control ECU