Electrical Faults
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2014 Volvo XC90, 2013 Volvo XC90, 2012 Volvo XC90, 2011 Volvo XC90, and 2010 Volvo XC90. However, it is still accessible from the selected car via links, so may be relevant.
In the event of errors in the signal levels on the communication cables for the central electronic module a diagnostic trouble code (DTC) is stored in the central electronic module. A check is carried out on each communication cable to the central electronic module, CAN L, CAN H on the low speed side and CAN L and CAN H on the high speed side There are two different levels which are detected (low or high).
This gives eight diagnostic trouble codes for detecting electrical faults.
The diagnostic trouble codes for electrical faults are CEM-DF0X for the low speed network and CEM-DF1X for high speed network.