EGR valve warning lamp: how to turn it off?
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The EGR valve is a system that reduces nitrogen oxide emissions from your vehicle. Unfortunately, it can fail due to the carbon generated when the engine burns. In this case, the engine light on the instrument panel may come on, indicating a problem with the EGR valve.
💡 What is an exhaust gas recirculation valve warning lamp?
La EGR valve it is a contamination protection device. Mandatory for vehicles with diesel engines and some gasoline engines. Thanks to its valve, it redirects the unburned exhaust gases after combustion to the intake port so that they are burned a second time.
This second combustion reduces the emissions of pollutants from your vehicle, in particular nitrogen oxides or NOx.
However, the function of the exhaust gas recirculation valve makes it particularly susceptible to the formation of calamine, black soot that accumulates and can block the exhaust gas recirculation flap.
In this case, the warning light may indicate a malfunction. But your car does not have a warning light specifically designed for the EGR valve. In fact it is engine warning light what lights up.
Therefore, this warning light can indicate a problem with the EGR valve as well as another type of malfunction. Therefore, the mechanic will conduct self-diagnosis read the error codes and find out if the EGR valve is to blame.
If the light comes on without cleaning for a long time, you can directly access the exhaust gas recirculation valve. If it is covered with limescale, the problem will be visible to the naked eye.
🚗 Can I drive with the exhaust gas recirculation valve warning light on?
If the exhaust gas recirculation valve is defective, the engine warning light comes on. It is usually displayed in orange-yellow on the control panel. If this warning light turns red, your vehicle is entering degraded regime : you will not be able to go through a certain diet or a certain report.
In this case, it will be difficult to drive a car. This is also strongly discouraged: a red indicator in the toolbar indicates a serious problem and should prompt you to stop. at once.
If the engine light glows amber, it may indicate a malfunction of the EGR valve. However, another failure is also possible. Indeed, this indicator can also appear in case of problems associated with particulate filter, To Lambda probe, It has sensor...
This indicator will illuminate to alert you of a serious problem. If your dashboard can sometimes tell you on the most recent cars that it's an EGR valve problem, you won't be sure until you run a garage diagnostic.
It is unsafe to continue driving with the engine light on, whether it is an EGR valve or not. In fact, you risk damaging the faulty part or even your engine a little more. To protect the mechanics, your vehicle may also go into degraded mode.
If it really is an exhaust gas recirculation valve, you may encounter the following problems if you continue to drive with the indicator lit:
- Drop in performance and jerks ;
- Exhaust smoke ;
- Zoom in pollution of your car ;
- Excessive fuel consumption.
In addition, you will not pass technical inspection if you run into problems with your anti-pollution device, including the EGR valve.
🔍 How to turn off the warning lamp for the EGR valve?
The EGR valve warning light is an engine warning light. Since this may indicate other problems, you must start by performing a self-diagnosis. The error codes will indicate if the problem is with the EGR valve.
If so, you have two options depending on the condition of your EGR valve:
- Exhaust gas recirculation valve blocked because it is too dirty : descaling will solve the problem and turn off the light.
- Exhaust gas recirculation valve damaged : it needs to be changed to turn off the warning light, because descaling will not be enough.
👨🔧 The exhaust gas recirculation valve has been replaced, but the indicator remains on: what to do?
If the engine light comes on due to a problem with the EGR valve, descaling or replacing the part should usually fix the problem and turn off the light.
If the indicator stays on after cleaning the exhaust gas recirculation valve or after replacing it, this may be due to a problem. did not come from your EGR valve... This is because the engine warning light may come on due to another malfunction.
Self-diagnosis is necessary to verify that the problem is with the EGR valve. If you did not complete this step before replacing the EGR valve, you may have missed the problem.
If your warning light is still on after replacing the exhaust gas recirculation valve and you are sure that this was the cause of the problem, it may be necessary to reprogram your computer engine.
Now you know what kind of light comes on in the event of a malfunction of the exhaust gas recirculation valve! You also know how to turn it off. If you have an exhaust gas recirculation valve problem, go through our garage comparator to have it cleaned or replaced at the best price.
