FixVault

DTC Detection Logic

DTC Display item Malfunction detected condition Possible cause
C1801 VHCL HEIGHT SENSOR Signal voltage of the vehicle height sensor remains 0.2 V or less or 4.6 V or more continuously for 60 seconds during sensor voltage (4.5 - 5.5 V) output by the air levelizer control module.
  • Harness or connectors (Sensor circuit is open.)
  • Vehicle height sensor
  • Air levelizer control module
  • Rear suspension component parts