DTC C1745: Exhaust Solenoid Valve Circuit Malfunction: Description

The exhaust valve is installed onto the height control compressor. Based on signals from the suspension control ECU, the exhaust valve opens the exhaust solenoid valve, which releases the high pressure air within the system out of the vehicle. The exhaust valve operates until the target vehicle height is achieved. When achieved, the height control sensor outputs a signal to the suspension control ECU to stop the operation of the exhaust valve.

DTC Code	Detection Condition	Trouble Area
C1745	When either of the following is detected: With the exhaust valve not activated, an open signal of the exhaust valve is detected for 1 second or more. With the exhaust valve activated, a short signal of the exhaust valve is detected 8 times successively.	Height control compressor (Exhaust valve) Wire harness or connector Suspension control ECU