3.2.421. SPN 522365, FMI 31, Engine injector cylinder #3, Current above normal: Short circuit between cablesΒΆ

Description

A short circuit between the low side and the high side.

Reaction in EEM

The FC is stored and the warning lamp is activated. The CAN message indicates active fault. Engine power will be heavily reduced (Degradation Level 3). The engine running may be odd due to the short circuit.

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 engine injector wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).
  • Measure between the engine injector cylinder #3 cables, to see if there is a short circuit between the cables.
  • Check the operation with another engine injector to see if the engine injector is defective.