ECU refers to the engine control unit, which works as the brain of a vehicle’s engine. ECU is responsible for running most of the systems of the engine to make sure the car runs smoothly on the roads.
With the advancement in technology, ECUs have become more advanced today. They are a vital part of any vehicle, and nearly every system in a vehicle relies significantly on ECU. In fact, the ECU is a large part of the car’s ability to function.
Since the ECU has to control how the engine operates, if it fails, then there could be severe issues with how your vehicle will perform.
How does an ECU work?
The ECU is a computer system that operates with a network of sensors that monitor fuel economy, emissions, fuel injection, and other essential aspects of the engine. The ECU is precisely aligned with the engine’s sensors and is responsible for ensuring smooth operation of the powertrain or Powertrain Control Module or PCM.
When the ECU works appropriately, it can ensure the engine functions the way it is meant to. If something goes wrong with the ECU, it could lead the check engine light to set off.
Signs of a malfunctioning ECU
A faulty ECU can cause a series of problems with the car. It is wise to find out problems earlier to avoid costly ECU repair down the line.
Check engine light remains on
There could be several reasons why the check engine light gets on; however, a malfunctioning ECU is often the reason. Once the problem shows up, it is vital that you get your vehicle to an expert mechanic to check what is wrong.
Poor fuel economy
If you find your fuel economy drops, it is possible that the ECU is no longer functioning the way it should.
Engine misfiring
The ECU is responsible for maintaining the timing of your engine. You will find your engine to be firing at the wrong moment if the ECU goes wrong.
Engine stalling
When your engine gets stalled when you are trying to get the car started, that is a potential warning sign of a failing ECU.
Flooded engine
On those rare occasions when you try to cross a flooded road, you might find the engine stalls out because it is flooded. If you find this issue, then surely there is a problem with the ECU.
A broken ECU is a costly repair, although the cost depends on the following factors:
- The model and year of the vehicle
- The area you live in
- The repair option you choose
- The mechanic you hire
Repairing the ECU on your own requires a fair understanding of technical know-how. If you are not skilled enough in managing technology, it is better to leave it to an expert who knows how to fix it. You do not want to risk the whole thing if you are not fully confident.
