Paccar

PACCAR MX (2004 Emissions) Fault Code: P1194 Fuel Filter – Very Clogged SET CONDITIONS:The PCI ECU (D420) detects that:1. Fuel temperature is more than 95?C [203?F] and2. Fuel pressure is too low DIAGNOSTIC CONDITION:This diagnostic runs continuously when the engine is running. 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:Very clogged fuel filter ADDITIONAL INFORMATION:1. The low-pressure fuel pressure...

PACCAR MX (2004 Emissions) Fault Code: P1195 Common Rail Fuel Pressure – Data Erratic, Intermittent or Incorrect, at Ignition On SET CONDITIONS:The PCI ECU (D420) detects that the actual rail pressure is more than 245 bar [3553 psi]. DIAGNOSTIC CONDITION:This diagnostic runs when:1. The engine is not running and2. The ignition is keyed on after it has been off for more than 200 seconds and3. Fuel temperature is lower than the fuel temperature at the previous ignition switch off event. CORRESPONDING OBD READINESS MONITOR:Comprehensive components monitor RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. REPAIR...

PACCAR MX (2004 Emissions) Fault Code: P1196 Common Rail Fuel Pressure – Data Erratic, Intermittent or Incorrect, at Ignition On SET CONDITIONS:The PCI ECU (D420) detects that the actual rail pressure drop is less than 140 bar [2030 PSI] since the last ignition switch off event. DIAGNOSTIC CONDITION:This diagnostic runs when:1. The engine is not running and2. The ignition is keyed on after it has been off for more than 200 seconds and3. Fuel temperature is lower than the fuel temperature at the previous ignition switch off event RESET CONDITION:This DTC changes to inactive when the fault is no longer...

PACCAR MX (2004 Emissions) Fault Code: P1201 Injector Solenoid Valve Cylinder 1 – Current Too Low or Open Circuit on ECU (D420) Pin and or Pin (A2) SET CONDITIONS:The PCI ECU (D420) detects no or a too low current in the electrical circuit of the injector. DIAGNOSTIC CONDITION:This diagnostic runs when the engine is running. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:1. This DTC changes to inactive when the fault is no longer detected.2. To enable the injector output, the ignition must be shut off for more the 15 seconds and turned on again. REPAIR VERIFICATION:1. Clear all DTCs.2. Test drive...

PACCAR MX (2004 Emissions) Fault Code: P1202 Injector Solenoid Valve Cylinder 1 – Short Circuit Between ECU (D420) Pin (A1) and Pin (A2) SET CONDITIONS:The PCI ECU (D420) detects a short circuit between the ECU pin A1 and A2 circuits. DIAGNOSTIC CONDITION:This diagnostic runs when the engine is running. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. To enable the injector output, the DTCs must be cleared. 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?–...