Diesel Particulate Filter Differential Pressure Sensor

The temperature sensor upstream of dpf monitors exhaust temperature during regeneration.

Diesel particulate filter differential pressure sensor.

What does code p244b mean. The ends of the filter plugged in a checkerboard pattern force the soot containing exhaust to flow through the porous filter walls. When a code p244b is stored you may assume that the powertrain control module pcm has detected an input signal from the circuit of the diesel particulate filter dpf pressure sensor indicating that differential pressure is too high. The most common diesel particulate filters in widespread use are cellular ceramic honeycomb filters with channels that are plugged at alternating ends as shown in figure 1.

Raney s info toll free. The signal of the sensor is not sufficient to determine an optimized timing for regeneration of the dpf. The dpf differential pressure sensor detects the difference between the exhaust pressure upstream and downstream of the diesel particulate filter by means of the exhaust pressure sampling pipes upstream and downstream of the dpf.