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Home >> Infiniti >> 2015 >> QX80 Base, AWD >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Suspension Control System (Air LEVELIZER Control System) >> DTC/Circuit Diagnosis >> DTC C1801: VHCL Height Sensor >> DTC Logic >> DTC Detection Logic

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
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