Diagnostic Trouble Code Chart

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to table below.

Air suspension system

DIAGNOSTIC TROUBLE CODE CHART

DTC Code	Detection Item	Trouble Area	Height Control Indicator Light
C1711	Front Height Control Sensor RH Circuit Malfunction	Harness or connector Front height control sensor RH Suspension control ECU	◦
C1712	Front Height Control Sensor LH Circuit Malfunction	Harness or connector Front height control sensor LH Suspension control ECU	◦
C1713	Rear Height Control Sensor RH Circuit Malfunction	Harness or connector Rear height control sensor RH Suspension control ECU	◦
C1714	Rear Height Control Sensor LH Circuit Malfunction	Harness or connector Rear height control sensor LH Suspension control ECU	◦
C1715	Front Acceleration Sensor RH Malfunction	Suspension control ECU	X
C1716	Front Acceleration Sensor LH Malfunction	Front acceleration sensor LH Harness or connector Suspension control ECU	X
C1717	Rear Acceleration Sensor Malfunction	Rear acceleration sensor Harness or connector Suspension control ECU	X
C1731	Front Damping Force Control Actuator RH Circuit Malfunction	Front absorber control actuator RH Harness or connector Suspension control ECU	X
C1732	Front Damping Force Control Actuator LH Circuit Malfunction	Front absorber control actuator LH Harness or connector Suspension control ECU	X
C1733	Rear Damping Force Control Actuator RH Circuit Malfunction	Rear absorber control actuator RH Harness or connector Suspension control ECU	X
C1734	Rear Damping Force Control Actuator LH Circuit Malfunction	Rear absorber control actuator LH Harness or connector Suspension control ECU	X
C1741	Front Height Control Solenoid Valve RH Circuit Malfunction	Front height control valve Harness or connector Suspension control ECU	◦
C1742	Front Height Control Solenoid Valve LH Circuit Malfunction	Front height control valve Harness or connector Suspension control ECU	◦
C1743	Rear Height Control Solenoid Valve RH Circuit Malfunction	Rear height control valve Harness or connector Suspension control ECU	◦
C1744	Rear Height Control Solenoid Valve LH Circuit Malfunction	Rear height control valve Harness or connector Suspension control ECU	◦
C1745	Exhaust Solenoid Valve Circuit Malfunction	Height control compressor Harness or connector Suspension control ECU	◦
C1751	Compressor Relay Coil Malfunction	Suspension control relay Harness or connector Suspension control ECU	◦
C1752	Height Control Compressor Motor Circuit Malfunction	Suspension control relay Harness or connector Height control compressor Suspension control ECU	◦
C1761 (*1)	Continuous Electric Current to Height Control Compressor Motor	Air leakage from the air tube or each valve Suspension control relay Front height control valve Rear height control valve Height control compressor Suspension control ECU	X
C1762 (*2)	Continuous Electric Current to Exhaust Solenoid	Air tube Front height control valve Rear height control valve Height control compressor Suspension control ECU	X
C1781	Suspension Control ECU Malfunction	Suspension control ECU	X
C1782	Power Source Voltage Malfunction	Auxiliary battery Charging system Suspension control ECU	X
C1783	Speed Signal Communication Error	Speed sensor Skid control ECU Suspension control ECU	X
C1784	Steering Angle Sensor Communication Error	Steering sensor Steering sensor power source circuit Suspension control system	X
C1785	Steering Control ECU Communication Error	Steering control ECU	X
C1787	Forward/Rearward/Sideways G Sensor Communication Error	Yaw rate sensor	X
C1788	Yaw Rate Sensor Communication Error	Yaw rate sensor	X
C1796	Front Acceleration Sensor RH Malfunction (Test Mode DTC)	Suspension control ECU	Test mode code
C1797	Front Acceleration Sensor LH Malfunction (Test Mode DTC)	Front acceleration sensor LH Harness or connector Suspension control ECU	Test mode code
C1798	Rear Acceleration Sensor Malfunction (Test Mode DTC)	Rear acceleration sensor Harness or connector Suspension control ECU	Test mode code
U0100	Lost Communication with ECM / PCM "A"	CAN communication system - ECM Suspension control ECU	X
U0101	Lost Communication with ECM	CAN communication system ECM Suspension control ECU	X
U0122	Lost Communication with Vehicle Dynamics Control Module	CAN communication system Skid control ECU Suspension control ECU	X
U0124	Lost Communication with Lateral Acceleration Sensor Module	CAN communication system Yaw rate sensor Suspension control ECU	X
U0126	Lost Communication with Steering Angle Sensor Module	CAN communication system Steering angle sensor Suspension control ECU	X
U0130	Lost Communication with Steering Effort Control Module	CAN communication system Steering control ECU Suspension control ECU	X
U0132	Lost Communication with Suspension Control ECU	Suspension control ECU	X
U0293	Lost Communication with HV ECU	CAN communication system Hybrid vehicle control ECU Suspension control ECU	X
HINT: 1. The system may output DTC C1761 even when the system is normal if one of the following occurs 1) the vehicle is full of passengers and the luggage compartment is full; 2) the vehicle is being driven or is stopped on an irregular surface; or 3) the air ducts are frozen. 2: The system may output DTC C1762 even when the system is normal if one of the following occurs: 1) the vehicle is being driven or is stopped on an irregular surface, or 2) the air tubes are clogged with snow or are frozen If DTC C1762 is output, vehicle height control will stop. However, if the power switch is turned OFF and then ON (IG), vehicle height control will start.