In the past few years, I’ve seen the EDC light illuminate at least 10 times, causing the vehicle to go into limp mode, lose power, and sometimes even not start. From my experience with Iveco, it’s one of the biggest problems that won’t go away.
It is my aim in this article to explain what an EDC light is, why it comes on, and how to fix it.
Is the Iveco EDC light a warning?
The EDC system is responsible for controlling the Iveco’s fuel injection and ignition. EDC stands for Electronic Diesel Control.
When either of these functions isn’t operating properly, the EDC light appears. A dirty injector, faulty injectors, or bad throttle bodies are some of the most common causes of an Iveco EDC displaying.
How does Electronic Diesel Control work?
Diesel engines have an electronic fuel injection system known as Electronic Diesel Control (EDC).
Improved engine performance, fuel economy, and low exhaust emissions are achieved through precise fuel delivery and metering.
The accelerator pedal position sets the dynamical range that ensures the engine operates within its limits.
Why does the Iveco EDC light come on?
As I mentioned above, the EDC light can be caused by a number of things. Here are some of the most common reasons, based on my experience:
1. Immobilizer failure:
A security system or an immobilizer is another name for this device. Whenever someone tries to start your Iveco without the right key, it disables the engine.
When the immobilizer fails, your Iveco goes into limp mode and the EDC light comes on because it cannot differentiate between correct and incorrect keys.
2. Fuel rail pressure sensor failure:
Oftentimes, these sensors fail on Iveco vehicles, as they monitor the pressure inside the fuel rail, which is what determines the rate at which the fuel flows through the fuel rail.
The fuel rail typically contains this sensor, which is cylindrical in shape. With the aid of an integrated electronic circuit, a sensitive element is incorporated into the device.
In order, for the engine cylinders to receive fuel at the correct pressure, the ECM (Engine Control Module) uses the sensor.
An inaccurate fuel pressure reading in your Iveco will cause the EDC light to illuminate when the fuel rail sensor is bad. It would be a good idea to check this sensor first.
3. Dirty Diesel Fuel Injectors:
A lot of dirt and deposits can accumulate over the years in the fuel injectors of your Iveco. In fact, diesel fuel attracts dirt like debris because it is highly lubricating.
A dirty injector isn’t the only problem; when they become stuck in place, they can’t spray fuel fully into the engine cylinders when the ECM instructs them to do so.
4. Faulty EGR Valve:
Besides faulty EGR valves, another common cause is a malfunctioning intake manifold. Both gasoline and diesel engines use the EGR valve to control emissions.
A small amount of exhaust gas is recirculated back into the combustion chamber by connecting the exhaust manifold to the intake manifold.
As a result, nitrogen oxide emissions are reduced and combustion chamber temperatures are maintained. Typically, an electric step motor or a vacuum control the EGR system.
While EGR valves reduce emissions, malfunctioning ones can reduce fuel efficiency and power output, as well as reduce engine performance. Consequently, the EDC indicator will illuminate when the EGR valve malfunctions.
Related Articles
Car With Key Symbol On Dashboard
Reduce Engine Oil Level Mercedes
Tesla Autopilot vs Enhanced Autopilot
Mercedes A8 Service: Code, Checklist & Maintenance Cost
5. Failing Throttle Body:
In addition to the EDC light appearing, a faulty throttle body can cause other problems. A bad throttle body may lead to poor acceleration and difficulty driving at high speeds if your Iveco’s engine’s throttle body isn’t working properly.
A butterfly valve controls the throttle body’s opening and closing based on fuel demand.
What is the procedure for resetting the EDC light on an Iveco?
An OBD scanner is the best way to scan for fault codes in your vehicle as an auto technician.
In addition to the things I mentioned above that can cause your EDC light to illuminate, other rare causes can also contribute to it.
If you want to check for fault codes on your vehicle, I recommend you have the vehicle scanned. Replacing an immobilizer will solve the problem if it’s an immobilizer issue.