Paccar

PACCAR MX (2004 Emissions) Fault Code: P229B Common Rail Pressure Release Valve Current – Too Low SET CONDITIONS:The PCI ECU (D420) detects that the measured common rail pressure release valve current is too low. 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...

PACCAR MX (2004 Emissions) Fault Code: P229C Common Rail Pressure Release Valve Current – Data Valid but Too Low SET CONDITIONS:The PCI ECU (D420) detects that the common rail pressure release valve control current has been lower than expected for more than 6 seconds. DIAGNOSTIC CONDITION:This diagnostic runs when the rail pressure operating state is: Release valve only. 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,...

PACCAR MX (2004 Emissions) Fault Code: P229D Common Rail Pressure Release Valve Current – Data Valid but Too High SET CONDITIONS:The PCI ECU (D420) detects that the common rail pressure release valve control current has been higher than expected for more than six seconds. DIAGNOSTIC CONDITION:This diagnostic runs when the rail pressure operating state is: Release valve only. 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,...

PACCAR MX (2004 Emissions) Fault Code: P2457 EGR Temperature – Data Valid but Too High, Most Severe SET CONDITIONS:The PCI ECU (D420) detects that measured EGR temperature is more than 240°C [464°F] for more than 30 seconds. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is keyed on 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...

PACCAR MX (2004 Emissions) Fault Code: P2458 CAN Communication – Message (CM1) Out of Range, DPF Regeneration Switch from vehicle Control System SET CONDITIONS:This DTC is set when a CAN message is received correctly, but the content (signal value or status) is out of the expected range. DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on or when the engine is running. 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...