PACCAR MX (2004 Emissions) Fault Code: P1601 PCI ECU – Internal Error
PACCAR MX (2004 Emissions) Fault Code: P1601 PCI ECU – Internal Error
SET CONDITIONS:
Programmed data in the ECU not correct.
DIAGNOSTIC CONDITION:
This diagnostic runs during start-up of the PCI ECU.
CORRESPONDING OBD READINESS MONITOR:
None
RESET CONDITION:
This DTC changes to inactive when the fault is no longer detected.
REPAIR VERIFICATION:
1. Clear all DTCs.
2. Test drive or operate the vehicle to meet the diagnostic conditions and set conditions.
3. Did the DTC come back?
– No, repair successful
– Yes, repair unsuccessful
POSSIBLE CAUSES:
Software fault
ADDITIONAL INFORMATION:
1. The PCI ECU does not start up.
2. Engine cannot be started.
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