Paccar

PACCAR MX (2004 Emissions) Fault Code: P1581 Turbo Speed – Data Valid but Too Low SET CONDITIONS:The PCI ECU (D420) detects a too low value from the turbocharger speed sensor. DIAGNOSTIC CONDITION:This diagnostic runs:1. When the engine speed is above 1000 rpm and2. The engine is loaded and3. The VTG turbocharger position is less than 95%. 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–...

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.

PACCAR MX (2004 Emissions) Fault Code: P1602 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.

PACCAR MX (2004 Emissions) Fault Code: P160A PCI ECU – Internal Error SET CONDITIONS:Programmed software in the ECU not functioning correctly. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. 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:This fault indicates an internal ECU error. ADDITIONAL INFORMATION:1. Software does not function correctly.2. Unpredictable software reactions.3. Functionality is not guaranteed...

PACCAR MX (2004 Emissions) Fault Code: P1644 PCI ECU 5V Sensor Supply – Voltage Too High or Short Circuit to Supply SET CONDITIONS:The PCI ECU (D420) detects that the internal ‘5V power supply 2’ voltage is too high. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. 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:Issues within the ‘5V...