3.2.250. SPN 4753, FMI 10, DOC inlet temperature value not plausibleΒΆ

Description

The DOC inlet temperature sensor value is not plausible.

Possible causes are:

  • The DOC inlet temperature sensor is disconnected.
  • The DOC inlet temperature sensor wiring is defective.
  • The DOC inlet temperature sensor is cross-connected with the SCR inlet or the SCR outlet sensor.
  • The DOC inlet temperature sensor is defective.

Reaction in EEM

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

NOTE: The present fault is classified as an emission related fault. Engine power will be reduced after a certain time which is defined by an authority.

Solution

  • Check that the DOC inlet temperature sensor is connected correctly.
  • Check the DOC temperature sensor wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).
  • Check that the exhaust temperature sensors are not cross-connected.
  • Check the operation with another DOC inlet temperature sensor to see if DOC inlet temperature sensor is defective.