Paccar

PACCAR MX (2004 Emissions) Fault Code: U140A VTG Turbocharger Actuator Effort – Data Erratic, Intermittent or Incorrect SET CONDITIONS:The PCI ECU (D420) receives a CAN message from the VTG turbocharger actuator (L037) that contains an out-of-range value for the actuator effort. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the ignition is on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive after the ignition is keyed off for at least 15 seconds and keyed on again, and 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...

PACCAR MX (2004 Emissions) Fault Code: U142F CAN Communication – Message (ACM_to_Eng) Out of Range, Estimated Pre-DOC Pressure from Aftertreatment System SET CONDITIONS:This DTC is set when the CAN message containing the calculated pressure before the DOC is not received correctly. 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?– No, repair successful– Yes, repair unsuccessful POSSIBLE CAUSES:1....

PACCAR MX (2004 Emissions) Fault Code: U1501 CAN Communication – Message (TCO1) Out of Range, Output Shaft Speed from Tachograph 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 the DTC...

PACCAR MX (2004 Emissions) Fault Code: U1502 CAN Communication – Message (TCO1) Out of Range, Vehicle Speed from Tachograph 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 the DTC come...

PACCAR MX (2004 Emissions) Fault Code: U153B CAN Communication – Message (PTO) Out of Range, Engine PTO Resume Switch 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 the DTC come...