Paccar

PACCAR MX (2004 Emissions) Fault Code: P009F Common Rail Pressure Release Valve – Malfunction Detected During Check SET CONDITIONS:The PCI ECU (D420) detects that the common rail pressure release valve is stuck for more than 3 seconds. DIAGNOSTIC CONDITION:This diagnostic runs:1. Engine load is steady and;2. Engine speed is between 1000 and 1700 rpm and;3. When the rail pressure operating state is: Pump unit only4. Requested rail pressure is more than 700 bar [10,153 PSI] and;5. Difference between the actual and requested rail pressure is less than 20 bar [290 PSI] and6. Engine running time since the last completed test...

PACCAR MX (2004 Emissions) Fault Code: P00B7 Coolant Pump Speed – Data Valid but Too Low When High Speed is Requested SET CONDITIONS:The PCI ECU (D420) detects that the average coolant pump speed is 400 rpm lower than expected. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the engine is running and the coolant pump is activated to run at high speed. 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...

PACCAR MX (2004 Emissions) Fault Code: P00BA Common Rail Fuel Pressure – Data Valid but Too Low, Moderately Severe SET CONDITIONS:The PCI ECU (D420) detects that the actual rail pressure is less than 100 bar. 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. 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. A common rail pump unit failure if...

PACCAR MX (2004 Emissions) Fault Code: P0107 Inlet Air Pressure in Inlet Manifold – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (A51) 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...

PACCAR MX (2004 Emissions) Fault Code: P0108 Inlet Air Pressure in Inlet Manifold – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (A51) SET CONDITIONS:This DTC is set when the ECU detects a higher voltage than expected on the signal or control circuit of the ECU. DIAGNOSTIC CONDITION:This diagnosis runs continuously when the ignition is keyed ON. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION: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...