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Home >> Lexus >> 2010 >> LS 460 RWD >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Air Suspension (Diagnostic Codes & Circuit Tests) >> Air Suspension System >> DTC C1741: Front Height Control Solenoid Valve RH Circuit Malfunction; DTC C1742: Front Height Control Solenoid Valve LH Circuit Malfunction >> Description

DTC C1741: Front Height Control Solenoid Valve RH Circuit Malfunction; DTC C1742: Front Height Control Solenoid Valve LH Circuit Malfunction: Description

The front height control valve independently opens and closes paths to the pneumatic cylinder for the front wheel side by receiving signals from the suspension control ECU.

DTC Code Detection Condition Trouble Area
C1741 When either of the following is detected:
  • With the height control valve not activated, an open signal of the height control valve is detected for 1 second or more.
  • With the height control valve activated, a short signal of the height control valve is detected 8 times successively.
  • Front height control valve
  • Wire harness or connector
  • Suspension control ECU
C1742 When either of the following is detected:
  • With the height control valve not activated, an open signal of the height control valve is detected for 1 second or more.
  • With the height control valve activated, a short signal of the height control valve is detected 8 times successively.
  • Front height control valve
  • Wire harness or connector
  • Suspension control ECU