Peugeot Anti Pollution Fault: Its Mean? (100% Guaranteed Fix!)


Peugeot Anti Pollution Fault: Its Mean?

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Ever found yourself puzzled by the ‘Peugeot Anti Pollution Fault‘ warning light on your Peugeot’s dashboard? This message is actually an alert triggered by your car’s onboard computer system, indicating that something is not right with its emission control system.

Peugeot Anti Pollution Fault 100% Solution:

If your Peugeot 307 shows an Anti Pollution Fault and Engine Check light, try these steps. Ensure there’s no recent service history or work done. Use a Peugeot-specific handheld reader for accurate codes. For a 2.0 Petrol engine, check the O2 sensor; a faulty one can trigger the warning. Consider a thorough drive in 4th gear on the motorway to clear exhaust deposits. If issues persist, a Planet diagnostic is recommended for a comprehensive diagnosis. Also, injector and catalytic converter cleaners, along with sea foam, might help.

Here In the below image You Can see the proof 👇, one of our reader who fixed his Peugeot Anti Pollution Fault problem by using our method this issue was due to O2 sensor he replaced his O2 sensor and the issue got fixed! 😍

Peugeot Anti Pollution Fault

Causes of Peugeot Anti Pollution Fault:

Peugeot Anti Pollution Fault: Its Mean?

Peugeot’s anti-pollution fault is essentially an emission control system warning. It indicates that your vehicle has detected a problem with the engine or exhaust emissions, which could potentially harm the environment.

Here are some common causes:

Check the O2 Sensor:

If your Peugeot 307 displays an Anti Pollution Fault and Engine Check light, consider checking the O2 sensor for a 2.0 Petrol engine. A malfunctioning sensor could trigger the warning. Replacing it may lead to improved engine performance, faster starts, cleaner runs, and a smoother idle.

Dirty or Damaged Mass Air Flow Sensor (MAF):

The MAF measures the amount and temperature of air entering your engine, affecting fuel injection timing.

Faulty Oxygen Sensors:

These sensors monitor how much unburned oxygen is in your car’s exhaust system.

Worn out Catalytic Converters:

They help reduce harmful gases produced by your car into less harmful substances.

Fuel Injector Issues:

Any problems with fuel injectors can lead to incorrect fuel-air mixture leading to pollutants increase.

Dirty/ damaged MAF sensorMeasures amount & temperature of air entering engine
Faulty oxygen sensorsMonitor unburned oxygen in exhaust system
Worn out catalytic converterReduces harmful gases into less harmful substances
Fuel injector issuesIncorrect fuel-air mix increases pollutants
  1. Ignition Coil Failure: Bad ignition coils can lead to engine misfires and increased emissions.
  2. Spark Plug Problems: Old or faulty spark plugs can cause incomplete combustion.
  3. EGR Valve Failure: Exhaust Gas Recirculation (EGR) valves recirculate a portion of the exhaust gas back through the engine cylinders reducing nitrogen oxide emissions but if it fails, it leads to pollution faults.

You can also watch this video to fix this issue:

Symptoms of Peugeot Anti Pollution Fault:

Peugeot Anti Pollution Fault: Its Mean?

Identifying an Anti-Pollution fault in your Peugeot vehicle is crucial for maintaining its performance. Here are some common symptoms:

  • Unusual Engine Behavior: You may experience erratic engine behavior, including sudden stalling or difficulty starting.
  • Reduced Power and Acceleration: The car might suffer from a lack of power, failing to reach the usual speed levels.
  • Poor Fuel Efficiency: Increased fuel consumption can be another symptom indicating a potential problem.
  • Warning on Dashboard Display: An obvious sign would be the illumination of the ‘Check Engine’ light or an explicit warning message stating “Anti-pollution fault”.

Next, we’ll look at these symptoms more closely with specific examples and explanations:

Unusual Engine BehaviorThis could be due to sensor failure causing incorrect data being fed into the engine control unit (ECU).
Reduced Power & AccelerationCould be caused by a blockage in the Diesel Particulate Filter (DPF), restricting exhaust flow and reducing power.
Poor Fuel EfficiencyA faulty oxygen sensor may send wrong information to ECU leading to inefficient fuel-air mixture preparation.
Warning Message on Dashboard DisplayThe car’s onboard diagnostic system has detected an issue that needs immediate attention.

Remember that early detection can save you costly repairs down the line!

Common Error Codes for Peugeot Anti Pollution Fault:

When your Peugeot displays an anti pollution fault, it’s referencing a problem with the engine’s emission control system. Below are common error codes you may encounter:

  • P0340: Camshaft Position Sensor Circuit Malfunction
  • P0401: Exhaust Gas Recirculation Flow Insufficient Detected
  • P0420: Catalyst System Efficiency Below Threshold (Bank 1)
  • P0443: Evaporative Emission Control System Purge Control Valve Circuit Malfunction

Here is what they mean and some potential fixes:

Error CodeMeaningPotential Fixes
P0340The car’s computer cannot detect the camshaft position sensor’s signal.Check wiring and connections, replace sensor if necessary.
P0401The exhaust gas recirculation (EGR) valve isn’t working properly. It means not enough exhaust gases are being recycled back into the engine to cool combustion temperature.Cleaning or replacing the EGR valve should fix this issue.
P0420This code suggests that there might be a problem with your catalytic converter in bank 1.You may need to replace your catalytic converter or check for any leaks in the exhaust system.
P0443Your car’s evaporative emissions system is having an issue specifically with purge control valve circuit malfunction.Replace purge control valve or inspect its circuit.

Remember, these are only a few of many possible anti pollution fault codes you might see on your Peugeot vehicle dashboard. Always consult your mechanic when experiencing issues like these as they could indicate serious problems.

How to Diagnose a Peugeot Anti Pollution Fault?

Peugeot Anti Pollution Fault: Its Mean?

Diagnosing an anti pollution fault in your Peugeot can be accomplished with the help of these steps:

  1. Check Engine Light: This is the first thing you should look for. If it’s on, there might be a problem.
  2. Diagnostic Tool: Use an OBD-II scanner tool to identify any error codes. It will provide specific information about what’s wrong.
  3. Visual Inspection: Look at your car’s exhaust system for any visible signs of damage or leaks.
  4. Listen to Your Car: Unusual noises from the engine could indicate a problem with the emission control system.
  5. Fuel Efficiency Check: A sudden decrease in fuel efficiency can also suggest an issue with the anti-pollution system.
StepTools NeededTips
Check Engine LightNoneAlways do this first
Diagnostic ToolOBD-II ScannerProvides specific details
Visual InspectionNoneLook for signs of damage
Listen to Your CarNoneNotice unusual sounds
Fuel Efficiency CheckNoneKeep track of fuel usage

Remember that while these steps can help identify potential issues, they may not pinpoint exact problems or their causes. Always consult with a professional mechanic if unsure.

Steps to Fix a Peugeot Anti Pollution Fault:

Peugeot Anti Pollution Fault: Its Mean?

If your Peugeot is displaying an anti-pollution fault, don’t panic! Here are some steps you can take to resolve the issue:

  1. Check and replace O2 Sensor: If your Peugeot 307 displays an Anti Pollution Fault and Engine Check light, consider checking the O2 sensor for a 2.0 Petrol engine.
  2. Check for Visible Issues: Look around your car for any visible problems – leaks, loose connections or damaged parts.
  3. Review Error Codes: Use an OBD-II scanner to read error codes from the vehicle’s computer. This will help pinpoint the problem area.
  4. Inspect Exhaust System: The exhaust system plays a major role in controlling pollution. Inspect it for blockages or damage.
  5. Examine Fuel System: A faulty fuel system can cause high emission levels leading to anti-pollution faults.
  6. Assess Air Intake and Filter: Make sure they’re functioning properly and clean; dirty filters can greatly affect performance which might lead to this fault message.
1Check for Visible Issues
2Review Error Codes with OBD-II scanner
3Inspect Exhaust System
4Examine Fuel System
5Assess Air Intake and Filter

Remember: if these steps do not clear up the fault, it would be best to visit a professional mechanic as soon as possible! Your vehicle’s health is crucial not only for its performance but also our environment!

Preventive Measures for Peugeot Anti Pollution Fault:

Preventing the anti-pollution fault in your Peugeot car is important. It ensures optimal performance, reduces pollution and saves on costly repairs. Here are some preventative measures:

  • Regular Service: Adhere to the recommended service schedule found in your vehicle’s manual.
  • Quality Fuel: Only use top tier petrol or diesel, as it contains additives that clean vital engine parts.
  • Good Driving Practices: Avoid short drives to prevent build-up of deposits in the exhaust system.

Here’s a handy table summarizing these actions:

Regular ServiceStick to service schedules outlined in user manual.
Quality FuelUse high-quality fuel with cleaning additives.
Good Driving PracticesLimit short drives; favor longer routes instead.

Also consider these steps:

  1. Check & replace air filters regularly.
  2. Keep an eye on emission levels.
    3.Regularly check & maintain the exhaust system.

Remember: preventive maintenance can save you from unwanted headaches down the road!

Tips for Maintaining a Healthy Emission System in Your Peugeot Car:

A healthy emission system is crucial to prevent the dreaded “anti-pollution fault” message from appearing on your Peugeot’s dashboard. Here are some tips to keep your car’s emission system in top shape:

  • Regular Servicing: Ensure that your car is serviced regularly according to the manufacturer’s schedule.
  • Use High-Quality Fuel: Low-quality fuel can lead damage or clog up the catalytic converter and diesel particulate filter (DPF). Always opt for high-quality fuel when possible.

Consider the following maintenance frequencies as a rough guide:

Maintenance ActivityFrequency
Oil ChangeEvery 5,000 miles
Air Filter ReplacementEvery 12,000 miles
Spark Plug ReplacementEvery 30,000 miles

Following these steps will help maintain a clean and efficient emission system, reducing the likelihood of an anti-pollution fault appearing.


  1. Never ignore warning lights or messages displayed by your vehicle – they’re there for a reason!
  2. If you’re not comfortable performing any maintenance tasks yourself, always seek professional assistance.
  3. Keeping up with regular service appointments can save you time and costly repairs down the road.

With diligent care and attention to detail, maintaining a healthy emission system in your Peugeot should be no trouble at all!

Understanding the Importance of Addressing the Anti Pollution Fault in your Peugeot Car:

The “anti pollution fault” is a general warning that can illuminate on your Peugeot car’s dashboard. It indicates there may be issues related to emissions or other environmental impact factors.

Key Reasons for Paying Attention:

  • Prevent Long-Term Damage: Ignoring this alert could lead to significant damage over time, potentially causing major engine problems.
  • Maintain Performance Levels: Regularly addressing these faults ensures optimal car performance and fuel efficiency.
  • Environmental Responsibility: Timely action helps reduce harmful emission levels, contributing to environmental protection.

Common Causes & Solutions:

Dirty Air FilterReplace with a new one
Faulty Exhaust SystemRepair or replace as needed
Malfunctioning SensorsCheck and fix sensor system
  1. A dirty air filter restricts airflow into the engine which can trigger the anti-pollution fault light.
  2. Issues with the exhaust system such as leaks or damages can cause higher emission levels leading to activation of this warning.
  3. If sensors like Oxygen sensor or Particle emission filter are not working properly, they might misinterpret data triggering false alarms.

Remember, always consult a professional mechanic if unsure about diagnosing or fixing any issues yourself!

Frequently Asked Questions about Peugeot Anti Pollution Fault:

What does the anti pollution fault in a Peugeot mean?

The anti-pollution fault is an alert on your Peugeot’s dashboard, pointing out issues related to the exhaust emission.

How can I fix this problem?

Check and replace the O2 sensor
Regular servicing of your car
Proper oil change and maintenance
Immediate attention to unusual noise or warning lights

Can I drive my car with this error message displayed?

It’s not recommended; however, short distances may be safe if there are no other warning signs present.

Is it expensive to fix?It depends on what caused the issue – could range from minor fixes to major repairs.
Should I ignore it if it disappears after some time?No, temporary disappearance doesn’t mean that the problem is resolved.

Conclusion and final thoughts

The “Peugeot anti-pollution fault” is a common issue that Peugeot car owners might face.

While it sounds intimidating, understanding what it means can help you take the right action promptly. It’s essentially your vehicle’s way of telling you there’s something wrong with its emission system.

Don’t ignore this warning! Get your vehicle checked by a professional as soon as possible to avoid further damage and costly repairs down the line.

Regular maintenance can prevent such faults from appearing in the first place, ensuring smoother rides and longer lifespan for your Peugeot.

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