2.2.301. SPN 520228, FMI 12, ECU monitoring: Power supply IC communication error

Description

The ECU monitoring system has detected an internal communication error in the EDC17CV41+ controller. The fault could occur due to wrong ECU settings in the software or a real problem in the ECU hardware.

Reaction in EEM

The FC is stored and the warning lamp is activated. The CAN message indicates an active fault.

Solution

First save the error log and then erase it. Restart the ECU after erasing the error log. If the fault occurs again during the next driving cycle, check the following paths:

• Check the ECU operation with another EEM4 controller. If the system is functional and the fault is not active with the replacement ECU, then the original ECU is defective.