69502363 SENSOR

IVECO DPF SENSOR

What is the DPF sensor?

Actually, when we talk about the "DPF sensor", we are referring to a set of sensors that monitor the status and performance of the diesel particulate filter (DPF/FAP). These sensors allow the ECU to correctly manage the regeneration of the filter and detect possible faults or saturation.

Types of sensors involved in the DPF

1. Differential pressure sensor

   • 📍 Location: before and after the DPF (measures the pressure on both sides).

   • 🔧 Function: measures the pressure difference to determine how much dirt (soot) has accumulated.

   • 📈 When the differential pressure increases, it means the filter is clogged.

2. Exhaust gas temperature sensor

   • 📍 There is usually one before the DPF and another after.

   • 🔧 Function: monitors the exhaust gas temperature, which is key for active regeneration (when the ECU injects extra fuel to raise the temperature and burn off the particles).

   • ⚠️ If the temperature does not rise enough, it cannot regenerate.

3. Ash content sensor (in some systems)

   • 🔧 Detects if the filter is too full of non-regenerable ash.

   • This indicates that the filter needs a physical cleaning or replacement.

How do they relate to regeneration?

• When the differential pressure sensor indicates soot saturation, and the gas temperature is adequate, the ECU activates a regeneration.

• If there is any fault in these sensors, the system blocks regeneration, which can lead to power loss and activation of the limp mode.

Symptoms of DPF sensor failure

• DPF or Check Engine light on.

• Messages such as “particle filter full”, “risk of clogging” or “regeneration not possible”.

• Failed or very frequent regenerations.

• Increased fuel consumption.

• Power loss (safe mode).

Diagnosis in IVECO

With E.A.SY, TEXA or Jaltest diagnosis you can:

• Read the differential pressure sensor values (in mbar).

• View exhaust gas temperature (in °C).

• Force a static or dynamic regeneration.

• View codes such as:

  • P2452: differential pressure sensor failure.

  • P2002: low filter efficiency.

  • P244A/P244B: exhaust gas temperature sensor failure.

Example:

Model > 65C17 2009

Chassis > ZCFC65C0005870633

Sheet > 76-01-14