2.2.180. SPN 3532, FMI 4, DEF tank level sensor: Short 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 level indicates: A DEF tank level sensor short circuit.

Possible causes are:

  • The fault is an internal fault of DEF tank sensor. Sensor has short circuit.

Reaction in EEM

The FC is stored and the warning lamp is activated. Engine power is heavily reduced (Degradation Level 3). The CAN message indicates an active fault.

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 operation with another DEF tank sensor.