C1731 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1731 – Front Gate Valve Solenoid Circuit


C1731 Possible Symptoms


Active Height Control (AHC) Suspension Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C1731 Possible Causes


Faulty Front Gate Valve Solenoid,Front Gate Valve Solenoid harness is open or shorted,Front Gate Valve Solenoid circuit poor electrical connection,Faulty Suspension Electronic Control Unit (ECU)


C1731 Description


The Control Valve Assembly consist of each front and rear leveling valve and gate valve and performs the height control and connecting and disconnecting the fluid line of the right and left shock absorber by operating the solenoid valve ON and OFF with the control signal from the Electronic Control Unit (ECU).