PACCAR MX (2004 Emissions) Fault Code: P1278 Cylinder 6 – Torque Contribution Too High SET CONDITIONS:The PCI ECU (D420) detects...

PACCAR MX (2004 Emissions) Fault Code: P127A EGR Pressure Difference – Data Valid but Too Low SET CONDITIONS:The PCI ECU...

PACCAR MX (2004 Emissions) Fault Code: P127B EGR Pressure Difference – Data Valid but Too High SET CONDITIONS:The PCI ECU...

PACCAR MX (2004 Emissions) Fault Code: P127C EGR Pressure Difference – Data Erratic, Intermittent, or Incorrect SET CONDITIONS:The PCI ECU...

PACCAR MX (2004 Emissions) Fault Code: P128E Common Rail Fuel Pressure Control – Incorrect SET CONDITIONS:The PCI ECU (D420) detects...

PACCAR MX (2004 Emissions) Fault Code: P128F Common Rail Fuel Pressure Control – Incorrect SET CONDITIONS:The PCI ECU (D420) detects...