Engine control unit or electronic control unit.
engine controle unit
Freightliner and Volvo.
It means you need to hook up to a computer with the Volvo software and pull codes.
#1346030
Speed is controlled by the ECU.
on most Chevy trucks the ecu is located behind the glovebox
It means you should go to a shop which has the appropriate software for your engine, and have them look up faults.
Engine check urgently
VOLVO 220f I ECU błąd sieci
You take it to a Volvo Dealer and they plug in a laptop and reprogram some parameters on the ECU in the truck.
Most 200 series Volvo share a similar design. Both the Ignition and Fuel Injection Electronic Control Units (ECU) is located behind the outside passenger-side kick panel. To get to it, remove the plastic panel and the overhead insulator, the Ignition ECU is mounted on the firewall, and to its right, the Fuel Injection ECU.
It is called the ECU, (Engine Control Unit)