PACCAR MX (2004 Emissions) Fault Code: U1835 VTG Turbocharger Actuator – CAN, Message Time-Out
PACCAR MX (2004 Emissions) Fault Code: U1835 VTG Turbocharger Actuator – CAN, Message Time-Out
SET CONDITIONS:
The PCI ECU (D420) detects that communication with the VTG turbocharger actuator (L037) is lost or intermittent.
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 set conditions.
3. Did the DTC come back?
– No, repair successful
– Yes, repair unsuccessful
POSSIBLE CAUSES:
1. Communication error between actuator and PCI ECU
2. No or incorrect VTG turbocharger actuator power supply
3. Faulty VTG turbocharger actuator due to:
– Internal actuator failure
– Coolant leakage expansion plugs VTG turbocharger
ADDITIONAL INFORMATION:
The VTG turbocharger is controlled by the VTG turbocharger actuator, a smart actuator that communicates with the PCI ECU via E-CAN.
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