Paccar

PACCAR MX (2004 Emissions) Fault Code: U17A8 Accelerator Pedal – Malfunction SET CONDITIONS:The PCI ECU (D420) detects that DTCs are active on both accelerator pedal position sensors. 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. To validate the repair, monitor the accelerator pedal sensors with the diagnostic service tool. 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:Faulty...

PACCAR MX (2004 Emissions) Fault Code: U17A9 Accelerator Pedal Operation – Data Erratic, Intermittent or Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the accelerator pedal is depressed above 2.6% while no driver is present. 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. To validate the repair, monitor the accelerator pedal sensors with the diagnostic service tool. 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?–...

PACCAR MX (2004 Emissions) Fault Code: U17B0 Water in Fuel Drain Control – Short Circuit to Supply on ECU (D420) Pin (A40) CORRESPONDING OBD READINESS MONITOR:None 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

PACCAR MX (2004 Emissions) Fault Code: U17B1 Water in Fuel Drain Control – Short Circuit to Ground on ECU (D420) Pin (A40) CORRESPONDING OBD READINESS MONITOR:None 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

PACCAR MX (2004 Emissions) Fault Code: U17B3 Water in Fuel Drain Control – Short Circuit to Supply on ECU (D420) Pin (A37) CORRESPONDING OBD READINESS MONITOR:None 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