Paccar

PACCAR MX (2004 Emissions) Fault Code: P228F Common Rail Fuel Pressure Control – Incorrect SET CONDITIONS:The PCI ECU (D420) detects that the measured rail pressure is more than 20 bar lower than the commanded rail pressure for more than 6 seconds. DIAGNOSTIC CONDITION:This diagnostic runs:1. When the engine is running at a steady load and speed.2. When the rail pressure operating state is: Pump unit only. CORRESPONDING OBD READINESS MONITOR:Fuel system monitor 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 following...

PACCAR MX (2004 Emissions) Fault Code: P2294 Common Rail Pressure Release Valve – Open Circuit on ECU (D420) Pin (C4) or Pin (C26) DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. CORRESPONDING OBD READINESS MONITOR:None 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 ADDITIONAL INFORMATION:When this DTC is active:1. The engine torque is reduced.2. The engine runs in protection mode.3. The rail pressure control is in the limp-home function.4. The rail pressure is limited to approximately...

PACCAR MX (2004 Emissions) Fault Code: P2295 Common Rail Pressure Release Valve – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C4) 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?–...

PACCAR MX (2004 Emissions) Fault Code: P2296 Common Rail Pressure Release Valve – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C4) 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:The diagnostic runs continuously when the ignition is keyed on. RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. POSSIBLE CAUSES:1. The sensor or actuator signal wiring has a short circuit to supply.2. A malfunction of the sensor or actuator ADDITIONAL INFORMATION:When this DTC is active:1. The...

PACCAR MX (2004 Emissions) Fault Code: P229A Common Rail Pressure Release Valve Current – Too High SET CONDITIONS:The PCI ECU (D420) detects that the measured common rail pressure release valve current is too high. DIAGNOSTIC CONDITION:This diagnostic runs continuously during starting and 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. Faulty common rail pressure...