PACCAR MX (2004 Emissions) Fault Code: P1678 PCI ECU – Software Error
PACCAR MX (2004 Emissions) Fault Code: P1678 PCI ECU – Software Error
SET CONDITIONS:
Programmed data in the ECU not correct.
DIAGNOSTIC CONDITION:
This diagnostic runs during start-up of the PCI ECU.
RESET CONDITION:
This DTC changes to inactive when the fault is no longer detected.
POSSIBLE CAUSES:
Software fault
ADDITIONAL INFORMATION:
1. The PCI ECU does not start up.
2. Engine cannot be started.
