Paccar

PACCAR MX (2004 Emissions) Fault Code: P0094 Common Rail Pump Unit Control – Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the common rail pump delivery (correction) is more than 25% for more than 4 seconds. DIAGNOSTIC CONDITION:This diagnostic runs when the rail pressure control state is: Pump unit only. 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:1. Only...

PACCAR MX (2004 Emissions) Fault Code: P0095 Intercooler Temperature – Data Erratic, Intermittent or Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the measured intercooler temperature sensor 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 [-4°F] CORRESPONDING OBD READINESS...

PACCAR MX (2004 Emissions) Fault Code: P0097 Intercooler Temperature – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C17) 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–...

PACCAR MX (2004 Emissions) Fault Code: P0098 Intercooler Temperature – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C17) SET CONDITIONS:This DTC is set when the ECU detects a higher voltage than expected on the sensor signal input of the PCI 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–...

PACCAR MX (2004 Emissions) Fault Code: P009A Ambient Temperature – Data Erratic, Intermittent, or Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the measured ambient temperature differs too much from the calculated ambient temperature for more than 300 seconds. DIAGNOSTIC CONDITION:This diagnostic runs:1. 300 seconds after an engine start and2. When the engine is running at a steady load and3. Vehicle speed is above 35 km/h [22 mph] RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. POSSIBLE CAUSES:1. Ambient temperature sensor deviation2. Humidity sensor deviation ADDITIONAL INFORMATION:1. The measured ambient temperature is compared with the...