Paccar

PACCAR MX (2004 Emissions) Fault Code: P1298 Engine Oil Temperature – Data Valid but Too High, Moderately Severe SET CONDITIONS:The PCI ECU (D420) detects that measured oil temperature is higher than 125?C [257?F] for more than 60 seconds. DIAGNOSTIC CONDITION:This diagnostic runs continuously after ignition is keyed on. 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. Malfunction on thermostat...

PACCAR MX (2004 Emissions) Fault Code: P1301 Cylinder 1 – Intermittent Misfire SET CONDITIONS:This DTC is set when the PCI ECU (D420) detects more than 20 misfires on cylinder 1, within 1000 crankshaft rotations. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the following is true:1. The coolant temperature is greater than 10?C [50?F] and2. The engine load is stable and3. When the engine speed is between 900 and 1650 rpm and4. No DTCs are present related to fuel pressure, fuel injectors, camshaft, crankshaft, oil and coolant temperature.5. The amount of injected fuel is between 70 and 220 mg/stroke. CORRESPONDING OBD READINESS...

PACCAR MX (2004 Emissions) Fault Code: P1302 Cylinder 5 – Intermittent Misfire SET CONDITIONS:This DTC is set when the PCI ECU (D420) detects more than 20 misfires on cylinder 5, within 1000 crankshaft rotations. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the following is true:1. The coolant temperature is greater than 10?C [50?F] and2. The engine load is stable and3. When the engine speed is between 900 and 1650 rpm and4. No DTCs are present related to fuel pressure, fuel injectors, camshaft, crankshaft, oil and coolant temperature.5. The amount of injected fuel is between 70 and 220 mg/stroke. CORRESPONDING OBD READINESS...

PACCAR MX (2004 Emissions) Fault Code: P1303 Cylinder 3 – Intermittent Misfire SET CONDITIONS:This DTC is set when the PCI ECU (D420) detects more than 20 misfires on cylinder 3, within 1000 crankshaft rotations. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the following is true:1. The coolant temperature is greater than 10?C [50?F] and2. The engine load is stable and3. When the engine speed is between 900 and 1650 rpm and4. No DTCs are present related to fuel pressure, fuel injectors, camshaft, crankshaft, oil and coolant temperature.5. The amount of injected fuel is between 70 and 220 mg/stroke. CORRESPONDING OBD READINESS...

PACCAR MX (2004 Emissions) Fault Code: P1304 Cylinder 6 – Intermittent Misfire SET CONDITIONS:This DTC is set when the PCI ECU (D420) detects more than 20 misfires on cylinder 6, within 1000 crankshaft rotations. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the following is true:1. The coolant temperature is greater than 10?C [50?F] and2. The engine load is stable and3. When the engine speed is between 900 and 1650 rpm and4. No DTCs are present related to fuel pressure, fuel injectors, camshaft, crankshaft, oil and coolant temperature.5. The amount of injected fuel is between 70 and 220 mg/stroke. CORRESPONDING OBD READINESS...