AIR SUSPENSION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Code	Description
C1711	Front Height Control Sensor RH Circuit Malfunction
C1712	Front Height Control Sensor LH Circuit Malfunction
C1713	Rear Height Control Sensor RH Circuit Malfunction
C1714	Rear Height Control Sensor LH Circuit Malfunction
C1741	Front Height Control Solenoid Valve RH Circuit Malfunction
C1742	Front Height Control Solenoid Valve LH Circuit Malfunction
C1743	Rear Height Control Solenoid Valve RH Circuit Malfunction
C1744	Rear Height Control Solenoid Valve LH Circuit Malfunction
C1745	Exhaust Solenoid Valve Circuit Malfunction
C1748	Low Pressure Tank Valve
C1751	Compressor Relay Coil Malfunction
C1752	Height Control Compressor Motor Circuit Malfunction
() C1761	Continuous Electric Current to Height Control Compressor Motor
() C1762	Continuous Electric Current to Exhaust Solenoid
C1781	Suspension Control ECU Malfunction
C1782	Power Source Voltage Malfunction
C1783	Speed Signal Communication Error
C1787	Forward/Rearward/Sideways G Sensor Communication Error
C1789	Vehicle Identification Malfunction
C1792	Height Control Switch Circuit (Test Mode DTC)
C1794	Height Control OFF Switch Circuit (Test Mode DTC)
C1799	Luggage Room Mode Switch Circuit (Test Mode DTC)
U0122	Lost Communication with Vehicle Dynamics Control Module
U0124	Lost Communication with Lateral Acceleration Sensor Module
U0140	Lost Communication with Main Body ECU
U0293	Lost Communication with HV ECU

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Air Suspension System (To 08/2009)