Paccar

PACCAR MX (2004 Emissions) Fault Code: P1356 VGT Turbocharger Actuator Temperature – Data Valid but Too High SET CONDITIONS:The VTG turbo charger actuator (L037) detects that the temperature of the actuator is above 125?C [257?F] for more than five minutes. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC will change to inactive immediately 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: P1400 EGR Mass Flow – Estimated EGR Rate Too High SET CONDITIONS:The PCI ECU (D420) detects that the calculated EGR gas mass flow is too high. DIAGNOSTIC CONDITION:This diagnostic runs when the engine speed is above 1100 rpm. 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? (Can be pending, inactive or active)– No, repair successful– Yes, repair unsuccessful POSSIBLE CAUSES:1. Contaminated...

PACCAR MX (2004 Emissions) Fault Code: P1401 Crankcase Air Pressure – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C5) SET CONDITIONS:This DTC is set when the ECU detects a higher voltage than expected on the signal or control circuit of the ECU. 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...

PACCAR MX (2004 Emissions) Fault Code: P1402 Crankcase Air Pressure – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C5) SET CONDITIONS:This DTC is set when the ECU detects a lower voltage than expected on the signal or control circuit of the ECU. 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...

PACCAR MX (2004 Emissions) Fault Code: P1403 Crankcase Air Pressure – Data Erratic, Intermittent or Incorrect, at Ignition On SET CONDITIONS:The PCI ECU (D420) detects that the measured crankcase pressure differs by greater than 5 mbar [0.07 PSI] from the expected pressure. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on (engine not running). RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. POSSIBLE CAUSES:1. Engine stalled twice consecutively2. Crankcase pressure sensor deviation ADDITIONAL INFORMATION:The crankcase pressure is monitored with the crankcase pressure sensor (F806) against ambient pressure