2.2.220. SPN 4359, FMI 1, Particle filter upstream pressure sensor: Pressure below normal.ΒΆ

Description

The WinEEM monitoring system has detect particle filter upstream pressure below normal.

Possible causes are:

  • The particle filter upstream pressure sensor is defective. Sensor is measuring too low value.
  • The particle filter upstream pressure sensor wiring is defective.

Reaction in EEM

The FC is stored and the fault lamp is activated. The CAN message indicates an active fault. NOTE: The present fault is classified as an emission related fault. Engine power is reduced after a certain time defined by an authority.

Solution

First save the error log and then do the procedure that follows:

  • Examine the particle filter upstream pressure sensor wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).
  • Make sure the 5 V power supply to the sensor is correct.
  • Try operation with another particle filter upstream pressure sensor to see if sensor is defective.

See Diesel particulate filter (DPF) difference pressure sensor sensor for reference.