Paccar

PACCAR MX (2004 Emissions) Fault Code: P0266 Cylinder 2 – Torque Contribution Too Low SET CONDITIONS:The PCI ECU (D420) detects that the combustion contribution of cylinder 2 is lower relative to the other cylinders. DIAGNOSTIC CONDITION:This diagnostic runs when the engine is running at a steady speed and load, and the vehicle speed is steady. 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 conditions:– Corresponding readiness monitor displays ‘Ready’– Diagnostic conditions are met– Set...

PACCAR MX (2004 Emissions) Fault Code: P0269 Cylinder 3 – Torque Contribution Too Low SET CONDITIONS:The PCI ECU (D420) detects that the combustion contribution of cylinder 3 is lower relative to the other cylinders. DIAGNOSTIC CONDITION:This diagnostic runs when the engine is running at a steady speed and load, and the vehicle speed is steady. 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 conditions:– Corresponding readiness monitor displays ‘Ready’– Diagnostic conditions are met– Set...

PACCAR MX (2004 Emissions) Fault Code: P0272 Cylinder 4 – Torque Contribution Too Low SET CONDITIONS:The PCI ECU (D420) detects that the combustion contribution of cylinder 4 is lower relative to the other cylinders. DIAGNOSTIC CONDITION:This diagnostic runs when the engine is running at a steady speed and load, and the vehicle speed is steady. 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 conditions:– Corresponding readiness monitor displays ‘Ready’– Diagnostic conditions are met– Set...

PACCAR MX (2004 Emissions) Fault Code: P0273 Common Rail Pump Unit 2 – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (A28) 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: P0274 Common Rail Pump Unit 2 – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (A28) 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. 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?–...