Conditions for Setting the DTC

C0408 02 

Voltage is applied to the rear differential clutch solenoid valve. An error is detected if the current is greater than the current which corresponds to less than 2.1 Ω resistance in the solenoid valve.

C0408 04 

The measured current deviates from the nominal value with more than 200 mA for more than 100 ms.

C0408 42 and C0408 43 

The rear differential clutch solenoid valve calibration values stored in the Rear Differential Clutch Control Module EEPROM are invalid or out of range.

C0408 4B 

There are no rear differential clutch solenoid valve calibration values stored in the differential clutch control module EEPROM.

C0408 61 

An error is detected if the rear differential clutch solenoid valve is not engaging adequately over a predetermined test sequence.