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Diesel Particulate Filter Pressure Sensor (B) Circuit

The Powertrain Control Module (PCM) monitors the rationality of the Diesel Particulate Filter (DPF) pressure sensor during idle and part load operating conditions. The test fails when the diesel particulate filter pressure sensor signal value at idle is less than 0.15 kPa (0.022 psi). The test also fails when the diesel particulate filter pressure sensor signal value at part load is less than a minimum value or greater than a maximum value. These minimum and maximum values are based on the volume of exhaust.

Cause:
Faulty Diesel Particulate Filter (DPF) Pressure Sensor
Diesel Particulate Filter (DPF) Pressure Sensor harness is open or shorted
Diesel Particulate Filter (DPF) Pressure Sensor circuit poor electrical connection
Diesel particulate filter pressure sensor connecting hose is loose, cracked, or missing
Diesel particulate filter pressure sensor connecting hose port is cracked or broken
Excessive amount of soot or ash in the diesel particulate filter

Symptoms:
Check engine light