Depollution System Faulty Peugeot 307 Issue [Reset/ Fixed]
Is your vehicle’s dashboard indicating a warning light with an error message of “Depollution system faulty Peugeot 307”?
It means that your vehicle software has detected an issue related to the emission control system responsible for controlling emissions. Now, you’re looking to find its solution and know why this issue is showing on your vehicle dashboard.
I will briefly explain how you can find the solution to this fault, know its causes, and detect these issues yourself when they happen next time. Here is a brief explanation of the faulty depollution system issue.
What is the depollution system?
As you know, automotive vehicles consume fuel in enormous quantities worldwide. When the fuel is consumed, several harmful gases are generated. These gases cause health issues for humans and other living things.
The emission control system is built to control and reduce the destructive effects of these gasses and pollutants. It works as a depollution system that helps to keep the environment clean and reduce the impact of contaminants.
What is the depollution system faulty Peugeot 307?
The depollution system faulty in Peupeot 307 indicates a problem in the emission control system. That is why a warning light is showing on your vehicle dashboard.
There are several components included in the emission control system that cause this fault. So, it isn’t easy to pinpoint the exact part of the vehicle that needs to be repaired or changed.
Firstly, we must discuss the components controlling and managing the emissions process.
Components of the depollution system
All components and their functions are broken down below:
- Catalytic converter
- Fuel system components
- Oxygen sensors
- DPF (Diesel Particular Filter)
- EGR valve (Exhaust Gas Recirculation)
Catalytic converter
The catalytic converter improves engine efficiency by filtering out harmful byproducts and gases like carbon monoxide, nitrogen oxides, and hydrocarbons into less harmful gas substances. It helps to reduce unhealthy emissions.
Fuel system components
The system consists of the fuel filter, injector, and carburetor that control fuel delivery to the engine and ensure efficient combustion.
Oxygen sensors
The primary function of an oxygen sensor is to control the emissions of petrol, gases, and diesel and monitor the oxygen levels in exhaust gases.
DPF (Diesel Particular Filter)
It helps to reduce harmful emissions by capturing the soot particles from the exhaust diesel gases.
EGR Valve (Exhaust Gas Recirculation)
It helps to recirculate a specific portion of exhaust gases into the engine’s cylinder to reduce the levels of nitrogen oxide. During the circulation process, the nitrogen oxide is reduced, and a portion of circulating air is converted into carbon dioxide, which is emitted.
Possible causes of depollution system faults
Different possible situations can lead to depollution system faults, but here are the most common and crucial ones:
- Oxygen sensors faults
- Vacuum leaks
- Catalytic converter fault
- Diesel particular filter issues
- Software glitches
- Fuel components issues
Oxygen sensors faults
The oxygen sensor helps adjust the air-fuel mixture and is crucial in managing it. A faulty oxygen sensor can cause an improper air-fuel mixture and increase or decrease oxygen levels in the exhaust gases. As a result, it will lead to increased inefficient fuel combustion and emissions.
Watch the video below to understand how to check and clean oxygen sensors in the rest of your home.
Vacuum leaks
Due to a leaking vacuum, the intake system will get disrupted, and the air/fuel ratio will also be affected. An increased air inflow into the engine can cause an error in the depollution system faulty Peugeot 307.
Catalytic converter fault
A faulty catalytic converter can’t purify the harmful substances that cause an increase in exhaust gasses, leading to higher emissions. It will also affect the depollution emission control system, increasing fuel combustion.
Diesel particular filter issues
If your 307 model is diesel-based, then a blocked particular diesel filter can cause a depollution system faulty warning issue in your vehicle. Clogged DPFs also cause excessive exhaust smoke, ignition problems, strange engine smells, and fuel combustion increases.
Software glitches
Sometimes, a software glitch in the engine control unit ECU can trigger false warnings, or an old version must be updated to the latest.
Fuel components issues
Faults in fuel components like fuel filters, tanks, and injectors can trigger higher emissions, and the dashboard starts blinking with a depollution faulty symbol.
Also read, How To Fix Front Left Malfunction Consult Workshop
How to fix/reset the depollution system faulty Peugeot 307?
To fix the depollution system faulty Peugeot 307, here are two ways:
- Diagnosis
- Visual inspection by a Mechanic
Diagnosis
Many diagnosis tools are available online or at mechanic shops that help detect trouble codes in engine control units. These trouble codes will pinpoint the components of the malfunctioning depollution system that need mechanic repair.
We can do this task with one of the best trouble code scanning tools, OBD-II, which is easily purchaseable online. You can do it yourself or get service from a certified technician. After connecting the tool with the vehicle, it will show all the issues along with the description, which helps to understand the error.
Visual inspection by a mechanic
A certified mechanic will visually inspect the components of the depollution system. He will deeply check all the components and repair or change the elements that cause the problems.
If you want to inspect your vehicle visually, follow the tasks below that will trigger the issue solution.
Depollution system’s components checking
Oxygen Sensor
Check the oxygen sensor, clean it with water, and change it if necessary.
Catalytic Converter
Check whether the counter is damaged or showing any signs of wear. If yes, then replace it with a new one.
Fuel system components
Ensure that the fuel filter is cleaned and not blocked and that the injector is in good working condition.
Diesel particular filter
If the diesel filter is blocked, replace it with a new one.
Exhaust gas recirculation valve
Check if the EGR valve is faulty, then clean it first and verify whether it is functioning correctly. If not, then replace it.
Symptoms of depollution system fault
When you see the following symptoms in your vehicle, you can understand that the depollution system in your Peugeot 307 model affects the car.
- Warning light
- Increased fuel consumption
- Strange engine smell
- Reduce performance
Warning Light
One of the most prominent and clear symptoms is the indication of a “depollution system fault” warning on the car dashboard. When you see it, immediately resolve it as soon as possible to prevent further damage that costs more.
Increased fuel consumption
If the depollution system is not working correctly, fuel consumption will increase because of blocked/clogged components that force the engine to work hard.
Strange engine smell
When you feel a strange engine smell, the exhaust system is not working correctly. Due to the blockage of filters or damaged parts, the engine will not smell overly friendly, resulting in unpleasant odors.
Reduce performance
The vehicle continuously reduces power and acceleration, leading to engine control unit faults.
Conclusion
In conclusion, we have briefly discussed the depollution system fault in Peugeot 307, its causes, possible solutions, symptoms, and the diagnosis process. Routine maintenance and service will keep your vehicle safe from depollution system issues.
You might troubleshoot the basic steps yourself, but for an accurate repair, you may face difficulties in technical tasks. If you encounter this warning, inspecting the car with a certified technician who will diagnose and fix the detected issues is advisable.
FAQ – Frequently Asked Questions
What is the depollution system?
The delusion system in vehicles controls and reduces emissions and harmful gasses into less toxic substances.
Can you drive with a faulty depollution system?
No, because it causes emissions of unhealthy pollutants into the environment that is dangerous to human health. However, approaching the nearest mechanic shop and getting the vehicle maintenance service done is advisable, saving money on other expenses.
How to fix the depollution system faulty Peugeot 307?
After inspecting the emissions control system’s components with a scan tool or visual inspection, the mechanic will fix the detected issues on the spot.
What causes a Depollution system to be faulty?
A blocked/clogged oil/fuel filter, faulty sensor, negligence in regular maintenance, and timely repairs are the significant causes of the depollution system fault.
Is the depollution system fault serious?
Yes, it can substantially impact your vehicle’s engine performance and acceleration, but it can also damage the exhaust system.
Martin Lee is an ASE-certified mechanic and contributing author at SincereMechanic. He uses his expertise to create captivating articles that align with our content strategy. Using his deep automobile knowledge, he does in-depth research, puts expertise into articles, and makes them very informative. That information ensures our readers receive many valuable insights about the Vehicles.