Paccar

PACCAR MX (2004 Emissions) Fault Code: P0148 Fuel Injection Control – Malfunction Detected SET CONDITIONS:The PCI ECU (D420) detects that the main fuel injection timing calculation is incorrect. 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:Faulty software. Reprogram ECU

PACCAR MX (2004 Emissions) Fault Code: P0149 Fuel Injection Control – Malfunction Detected IMPORTANT: Do not troubleshoot this DTC. POSSIBLE CAUSES:No repairs are necessary. ADDITIONAL INFORMATION:The driver is not informed by a warning when this DTC is active.

PACCAR MX (2004 Emissions) Fault Code: P0168 Fuel Temperature – Data Valid but Too High, Most Severe SET CONDITIONS:The PCI ECU (D420) detects that the fuel temperature is above 98°C [208°F] for greater than 30 seconds. DIAGNOSTIC CONDITION:This diagnosis runs continuously when the ignition is keyed ON. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:1. This DTC changes to INACTIVE after the diagnosis runs and passes.2. This DTC cannot be cleared from the ECU memory. REPAIR VERIFICATION:1. Contact your engine field service representative for authorization to clear the warranty DTC.2. Clear all DTCs.3. Test drive or operate the vehicle to meet the...

PACCAR MX (2004 Emissions) Fault Code: P0180 Fuel Temperature – Data Erratic, Intermittent or Incorrect, at Ignition On SET CONDITIONS:The PCI ECU (D420) detects that the measured fuel temperature sensor reading differs more than 3°C [5.4°F] from the average of other temperature sensor readings on the engine for more than 5 seconds (after the ignition has been keyed off for at least 8 hours). DIAGNOSTIC CONDITION:This diagnostic runs:1. When the ignition has been keyed off continuously for at least 8 hours2. Difference between the coolant temperature and ambient temperature is less than 15°C [59°F]3. Ambient temperature is more than -20°C...

PACCAR MX (2004 Emissions) Fault Code: P0182 Fuel Temperature – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (A42) 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 successful–...