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Home >> Infiniti >> 2011 >> QX56 AWD >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Air LEVELIZER Control System >> DTC/Circuit Diagnosis >> DTC C1805: VHCL Height Adj Down >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

MALFUNCTION DETECTED CONDITION AND POSSIBLE CAUSE

DTC Display item Malfunction detected condition Possible cause
C1805 VHCL HEIGHT ADJ DOWN The vehicle height is 15 mm (0.59 in) or more raise than the reference height despite the output of exhaust solenoid ON signal continuously for 120 seconds by the air levelizer control module.
  • Harness or connector
  • Vehicle height sensor
  • Air compressor (exhaust solenoid)
  • Air tube
  • Rear suspension component parts
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