2.2.170. SPN 3519, FMI 3, DEF tank temperature sensor: Open circuit detected in sensor.ΒΆ

Description

The diesel exhaust fluid (DEF) tank sensor is installed in the DEF tank. The DEF tank sensor is an independent unit which measures all the critical parameters of the DEF.

The measured DEF tank temperature indicates: A DEF tank temperature sensor open circuit.

Possible causes are:

  • The fault is an internal electronic fault of DEF tank sensor.
  • The DEF tank sensor is defective.

Reaction in EEM

The FC is stored and the warning lamp is activated.

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

Solution

First save the error log and then obey the solutions that follow:

  • Examine the DEF tank sensor wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).
  • Try the operation with another DEF tank sensor.