Paccar

PACCAR MX (2004 Emissions) Fault Code: P102F BPV Actuator Temperature – Data Erratic, Intermittent or Incorrect, at Ignition On SET CONDITIONS:The PCI ECU (D420) detects that the actuator temperature from the BPV valve actuator differs by greater than 3°C [5.4°F] from the average of other temperature sensors 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 is switched on (NO engine start) and2. The difference between the coolant temperature and ambient temperature is less than 15°C [59°F] and3. Ambient temperature is more...

PACCAR MX (2004 Emissions) Fault Code: P1030 EGR Temperature – Data Erratic, Intermittent or Incorrect, at Ignition On SET CONDITIONS:The PCI ECU (D420) detects that the measured EGR 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]...

PACCAR MX (2004 Emissions) Fault Code: P1032 Vehicle Speed Sensor – Data Erratic, Intermittent or Incorrect, at Ignition On SET CONDITIONS:The PCI ECU (D420) detects that the measured vehicle speed is more than 3 km/h (1.86 mph) after the ignition is keyed on. DTC P1032 becomes active after five key cycles with an incorrect measured vehicle speed. DIAGNOSTIC CONDITION:This diagnostic runs once each key cycle. The vehicle speed is checked 2 seconds after the ignition is keyed on. RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. POSSIBLE CAUSES:1. Faulty vehicle speed signal2. Vehicle not at...

PACCAR MX (2004 Emissions) Fault Code: P1039 Exhaust Gas Pressure After BPV – Data Valid but Too High SET CONDITIONS:The DTC is set if the pressure after BPV corrected for the ambient pressure is higher than the threshold which is based on the exhaust gas mass flow. DIAGNOSTIC CONDITION:1. The diagnostic runs if all the conditions mentioned in this chapter are met.2. The air pressure sensor after BPV is fitted.3. EGR and BPV are controlled normally.4. No faults present on the pressure sensor after BPV, ambient pressure sensor, pressure sensor before turbine.5. Exhaust gas flow rate > 250 g/s6. Time...

PACCAR MX (2004 Emissions) Fault Code: P103C EGR Control – Unable to Reach Target SET CONDITIONS:The PCI ECU (D420) detects that the demanded NOx conversion is limited by the EGR system limits for more than 300 seconds. DIAGNOSTIC CONDITION:This diagnostic runs:1. When the engine is running at a steady load and2. Coolant temperature is above 50°C [122°F] 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...