I am running an SCT tuner: getting the following codes
U0100
P2453
P2455
I would appreciate any help thanks
08' King Ranch

 

U0100 - Lost Communication With Electronic Control Module(ECM)/Powertrain Control Module (PCM)

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