I got a bully dog HD watchdog and it put all the codes into readable format. Then I just use this website to find out what the coded mean ECM TuneUps - Paccar MX13 EPA10 Fault Code list description
What is the FMI? SPN 1209 has to do with exhaust back pressure, but I can't tell you any more information without an FMI. If you are getting that fault from the touch screen, push on that fault to open the next screen that will tell you the FMI #. P0473 SPN 1209 FMI 3 - Pre-turbine air pressure over range fault P0472 SPN 1209 FMI 4 - Pre-turbine air pressure under range fault P0471 SPN 1209 FMI 2 - Pre-turbine air pressure out of range at powerup P1723 SPN 1209 FMI 16 - FEV OBD P3 ControlDeviation diagnosis high fault P1724 SPN 1209 FMI 18 - FEV OBD P3 ControlDeviation diagnosis low fault P1726 SPN 1209 FMI 10 - FEV OBD P3 GovSlowResponse diagnosis P104D SPN 1209 FMI 11 - P3 (exhaust air pressure before turbine) sensor plausibility fault (high threshold) P1057 SPN 1209 FMI 17 - P3 (exhaust air pressure before turbine) sensor plausibility fault (low threshold) P1042 SPN 1209 FMI 15 - P3 (exhaust air pressure before turbine) controller feedback monitor, VGT surge clamping symptom P1045 SPN 1209 FMI 21 - P3 (exhaust air pressure before turbine) controller feedback monitor, VGT surge clamping symptom