The engine control unit is one of the most important parts of your car’s on-board computer. It helps regulate the systems and sub-systems imperative to the operation of your vehicle, so when it goes wrong it can cause a host of problems. Some of the most common symptoms of a malfunctioning ECU include permanently lit engine check lights on the dashboard and irregular fuel consumption and it can even stop you from starting the car. This can be a very expensive part to replace, so you are often better off trying to purchase second hand rather than buying new from a dealer and fitting the part yourself.
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