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Home >> Infiniti >> 2018 >> QX80 AWD >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Suspension Control System (DTCS) >> E-Sus(Air LEVELIZER Control Module) >> DTC C1804: VHCL Height Adj Up >> DTC Description >> DTC Detection Logic

DTC Detection Logic

DTC

Display item

Malfunction detected condition

Possible cause

C1804

VHCL HEIGHT ADJ UP

The vehicle height is 15 mm (0.59 in) or more lower than the reference height despite the output of air compressor ON signal continuously for 120 seconds by the air levelizer control module.

  • Harness or connector
  • Air compressor
  • Air compressor relay
  • Air levelizer control module
  • Rear shock absorber (air chamber)
  • Vehicle height sensor
  • Air tube
  • Rear suspension component parts
  • Overloaded