Paccar

PACCAR MX (2004 Emissions) Fault Code: P1645 PCI ECU 5V Sensor Supply – Voltage Too Low or Short Circuit to Ground SET CONDITIONS:The PCI ECU (D420) detects that the internal ‘5V power supply 2’ voltage is too low. 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...

PACCAR MX (2004 Emissions) Fault Code: P1650 Red Warning – Short Circuit to Ground or Open Circuit on ECU (D420) Pin (B8) SET CONDITIONS:This DTC is set when the ECU detects a lower voltage than expected on pin (B8) of the PCI ECU (D420). DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. 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...

PACCAR MX (2004 Emissions) Fault Code: P1652 Red Warning – Short Circuit to Supply on ECU (D420) Pin (B8) SET CONDITIONS:This DTC is set when the ECU detects a higher voltage than expected on pin (B8) of the PCI ECU (D420). DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. 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:1....

PACCAR MX (2004 Emissions) Fault Code: P1653 DtcShared.ViewModels.DtcInfoViewModel SET CONDITIONS:This DTC is set when the ECU detects a lower voltage than expected on pin (B4) of the PCI ECU (D420). DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. 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:1. Wiring interrupted or short circuit to ground2. Defective PCI ECU (D420)...

PACCAR MX (2004 Emissions) Fault Code: P1655 Yellow Warning – Short Circuit to Supply on ECU (D420) Pin (B4) SET CONDITIONS:This DTC is set when the ECU detects a higher voltage than expected on pin (B4) of PCI ECU (D420). DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. 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:1. Wiring,...