U0164

DTC Troubleshooting: U0164

DTC U0164: Door Multiplex Control Unit Lost Communication with Climate Control Unit

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. Troubleshooting - B-CAN System Diagnosis Test Mode A

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTC U0164 indicated?
YES - Go to the door multiplex control unit input test and check the power and ground. If OK, replace the driver's power window master switch. Power Window Master Switch Replacement

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections between the door multiplex control unit and climate control unit.