DTC trouble code help!!!
Detailed Description...
This DTC is set when the PCM can not communicate with the transmission control module (TCM).
Possible causes...
Communication error
P2453 - Diesel Particulate Filter Pressure Sensor A Circuit Range/Performance
Detailed Description...
The powertrain control module (PCM) monitors the diesel particulate filter pressure sensor for offset and stuck signal value concerns. The test fails when the diesel particulate filter pressure sensor signal value at key ON, engine OFF is greater than 2.5 kPa (0.36 psi) or the key ON, engine running signal value changes less than 0.01 volt in 2 minutes.
Possible causes...
Corrosion or poor mating terminals and wiring
Leaks in the diesel particulate filter pressure sensor connecting hose
Damaged diesel particulate filter pressure sensor
P2455 - Diesel Particulate Filter Pressure Sensor A Circuit High
Detailed Description...
The powertrain control module (PCM) monitors the diesel particulate filter pressure sensor for a high voltage concern. The test fails when the sensor voltage is greater than 4.90 volts for greater than 15 seconds.
Possible causes...
DPF signal circuit open or short to voltage
SIGRTN circuit open
Damaged diesel particulate filter pressure sensor





