Paccar

PACCAR MX (2004 Emissions) Fault Code: P1106 Engine Protection System – Power Derate Active SET CONDITIONS:This DTC becomes active if the DTC from which it originates has been active for a certain time. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC becomes inactive as soon as the DTC from which it originates has become inactive. 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:IMPORTANT: Do not troubleshoot this DTC since it originates from another active DTC. 1. This...

PACCAR MX (2004 Emissions) Fault Code: P1110 Intercooler Efficiency – Too Low SET CONDITIONS:The PCI ECU (D420) detects that cooling capacity of the intercooler is too low for more than 40 seconds. DIAGNOSTIC CONDITION:This diagnostic runs:1. 150 seconds after an engine start and2. Engine is running at steady speed and load and3. Coolant temperature is above 65?C [149?F] and4. Vehicle speed is more than 25 km/h [15.5 mph] and CORRESPONDING OBD READINESS MONITOR:VTG 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...

PACCAR MX (2004 Emissions) Fault Code: P1115 Engine Coolant Temperature – Data Valid but Too High, Moderately Severe SET CONDITIONS:The PCI ECU (D420) detects that measured coolant temperature is more than 110?C [230?F] for more than 10 s. DIAGNOSTIC CONDITION:This diagnosis runs continuously when the ignition is keyed ON. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to INACTIVE after the diagnosis 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?– No, repair successful– Yes, repair unsuccessful POSSIBLE CAUSES:1. Coolant level too...

PACCAR MX (2004 Emissions) Fault Code: P1122 Cruise Control Brake Signal – Data Erratic, Intermittent, or Incorrect SET CONDITIONS:The PCI ECU (D420) detects that both cruise control and engine torque are governed and at the same time the parking brake or foot brake pedal is applied. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is 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–...

PACCAR MX (2004 Emissions) Fault Code: P1127 Intercooler Temperature – Data Valid but Too High, Moderately Severe SET CONDITIONS:The PCI ECU (D420) detects that the intercooler outlet temperature is more than 95?C [203?F] for more than 60 seconds. DIAGNOSTIC CONDITION:This diagnostic runs 300 seconds after the engine is started. 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. Restricted air...