Kiera Jefferson
The Peugeot 207 is a popular car model that has been affected by a common issue: the 'anti-pollution fault'. This problem has been observed in vehicles manufactured between 2007 and 2015, encompassing both the standard 1.4 and 1.6-litre engines and the higher-performance variants. The fault message can be a result of various factors, including issues with the ECU, head gasket, or incorrect fuel/air ratio, which can cause the engine to misfire. Resolving this issue may involve seeking professional assistance, utilising diagnostic tools, or even sending the engine ECU for testing and rebuilding services.
| Characteristics | Values |
|---|---|
| Affected Models | Peugeot 207, Peugeot 207cc, Peugeot 207 GTi 175bhp, Peugeot 207 SW, Peugeot 207 Sport Auto |
| Affected Production Years | 2007, 2010, 2014 |
| Engine Types | 1.4L, 1.6L, VTi, GT CC |
| Possible Causes | Incorrect fuel/air ratio, low-quality or incorrect fuel types, worn spark plugs, faulty engine ECU, water ingress, faulty connector or ground connection, faulty crank position sensors, faulty O2 (lambda) sensors, corrosion and rust buildup, faulty coolant temperature sensor/gauge |
| Solutions | Check fault codes, send ECU for rebuild, check connector and ground connection, inspect crank position sensors, O2 (lambda) sensors, and grounding points, take the car to a garage |
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What You'll Learn
Check for corrosion and rust buildup near the engine ground points
If you're experiencing issues with your Peugeot 207, it's important to check for corrosion and rust buildup near the engine ground points. This is because corrosion and rust can have detrimental effects on the performance and integrity of your vehicle's engine.
Corrosion and rust are similar but distinct processes. Corrosion is an umbrella term for a range of processes that cause materials to deteriorate through chemical reactions. Rusting is one such process, specifically referring to the oxidation of iron, steel, or similar alloys, resulting in the production of iron oxide. Corrosion and rust can lead to component failure and issues caused by contaminants, which are the deposits produced when corrosion occurs. These contaminants can mix with oil to form sludge, reducing the service life of both oil and components.
To check for corrosion and rust buildup near the engine ground points, begin by parking your vehicle in a suitable location. Choose a flat, hard surface like a concrete garage floor or level driveway, and avoid gravel, uneven fields, or areas with heavy traffic. Engage the parking brake to ensure the vehicle remains stationary while you work. Place a tarp on the ground to catch any oil spray and don protective gear, such as a respirator and gloves.
Next, locate the engine ground points. These are usually found near the air intake valve and the engine block. Visually inspect these areas for signs of corrosion and rust buildup. Look for reddish or orange-brown flakes or deposits, which are indicative of rust. Use a borescope or similar inspection tool to get a closer look at hard-to-reach areas. If you notice any corrosion or rust, it's important to address it promptly.
If you detect surface rust, you may be able to remove it manually. Slide or crawl underneath the car and use a wire brush, metal scraper, or sandpaper to scrape away the rust. Alternatively, consider soda blasting or sandblasting for more effective removal. Always wear eye protection during the removal process to prevent rust flakes from entering your eyes. If the rust has penetrated deeper and weakened the metal or caused holes, it's best to seek professional assistance at an auto shop. They can advise you on repair options or provide replacement parts if necessary.
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Inspect the crank position sensors and connectors
To reset an anti-pollution fault in a Peugeot 207, you must first identify the root cause of the issue. One potential cause is faulty crank position sensors or connectors. To inspect the crank position sensors and connectors, follow these steps:
First, locate the crank sensor. The crank sensor is located on the backside of the engine block. It is situated in the bell housing of the transmission near the rear head. The crank sensor plays a crucial role in generating the engine speed signal code.
Next, inspect the crank position sensors and their connectors for any signs of damage or corrosion. Pay close attention to the connectors, as they are prone to water ingress, especially after heavy rain. Detach the battery before inspecting or cleaning any connections near the ECU (Engine Control Unit) or BSI (Battery System International) to ensure your safety.
Additionally, check the ground connection, which is separate from the coil connector and directly connects to the engine block near the air intake valve. Ensure that the connection is secure and free from corrosion.
If you notice any issues with the crank position sensors or connectors, such as corrosion or loose connections, address them accordingly. You may need to clean or replace the affected parts.
By carefully inspecting and maintaining the crank position sensors and connectors, you can help prevent issues with the anti-pollution system in your Peugeot 207. Remember to consult a professional mechanic if you are unsure about any aspects of the inspection or repair process.
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Check the spark plugs
Spark plugs are essential components of a car's ignition system, and they play a crucial role in engine performance and fuel efficiency. Over time, spark plugs can become worn out or fouled, leading to incomplete combustion and increased emissions. Checking the spark plugs on your Peugeot 207 is a straightforward process and can help identify any issues causing the anti-pollution fault. Here's a step-by-step guide to checking the spark plugs:
Step 1: Locate the Spark Plugs
The first step is to locate the spark plugs in your Peugeot 207. They are usually located on the top of the engine, under the ignition coils. You may need to remove some engine components for access, so refer to your car's repair manual for the exact location and instructions.
Step 2: Inspect the Spark Plugs
Once you have located the spark plugs, carefully remove them one by one for inspection. Look for any signs of damage, wear, or fouling. Fouling refers to the buildup of carbon deposits on the spark plug, which can interfere with the spark and lead to incomplete combustion. Compare the condition of the spark plugs with images online or in a repair manual to get an idea of normal wear and tear versus excessive fouling or damage.
Step 3: Check the Gap
Another important aspect to check is the spark plug gap. The gap is the distance between the centre and side electrodes of the spark plug. This gap needs to be set to the manufacturer's specifications, which you can find in your car's repair manual. If the gap is too small or too large, it can affect the spark and combustion process. Use a feeler gauge to measure the gap and adjust it if necessary.
Step 4: Evaluate the Insulation
Inspect the porcelain insulator of the spark plug. This insulator should be intact and free from any cracks or damage. A damaged insulator can lead to misfires and engine problems. Also, check for any oil or coolant contamination on the insulator, as this could indicate more serious engine issues.
Step 5: Clean or Replace
If the spark plugs show signs of heavy fouling or damage, they will need to be replaced. It is recommended to replace all the spark plugs at the same time to ensure optimal performance. However, if the spark plugs are only slightly fouled, you can try cleaning them with a specialised spark plug cleaner or a wire brush. Ensure the plugs are completely dry before reinstalling them.
Remember, worn or faulty spark plugs can contribute to the anti-pollution fault in your Peugeot 207, so regular inspection and maintenance are crucial. If you are uncomfortable performing these checks yourself, a qualified mechanic can inspect and replace the spark plugs for you. Additionally, other issues such as the ECU, head gasket, fuel/air ratio, and lambda sensors can also contribute to the anti-pollution fault, so comprehensive diagnostics are recommended.
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Check the fuel/air ratio
Checking the fuel/air ratio of your Peugeot 207 can help you identify the cause of the anti-pollution fault. An incorrect fuel/air ratio can cause the engine to misfire, leading to the anti-pollution fault.
- Inspect the fuel quality: Ensure that you are using the correct fuel type for your Peugeot 207. Low-quality or incorrect fuel types can trigger the EMS anti-pollution fault.
- Check the spark plugs: Worn or fouled spark plugs can lead to incomplete combustion and increased emissions, resulting in the anti-pollution fault. Replace the spark plugs if necessary.
- Examine the lambda sensors: Inspect the connectors to both O2 (lambda) sensors. A non-functioning lambda sensor circuit can cause MOT emissions failure and trigger the anti-pollution fault.
- Monitor the coolant temperature sensor: A failure of the coolant temperature sensor or gauge can lead to constant overheat warnings and engine idling problems, affecting the fuel/air ratio and triggering the anti-pollution fault.
- Address corrosion and rust: Pay close attention to the grounding points on the chassis. Corrosion and rust buildup near the engine ground points can impact the fuel/air ratio and overall engine performance.
- Consider water ingress: If the issue started after strong rain, inspect the ECU and BSI connectors for water ingress. Water intrusion can impact the engine's performance and trigger the anti-pollution fault.
Remember to always detach the battery before removing, inspecting, or cleaning any connections near the ECU or BSI. By following these steps and addressing any issues related to the fuel/air ratio, you can help resolve the anti-pollution fault in your Peugeot 207.
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Use a Car Diagnostics Scanner to identify the issue
If you're experiencing an anti-pollution fault with your Peugeot 207, one way to identify the issue is by using a car diagnostics scanner. This tool can help you read error codes and diagnose problems with your vehicle's systems. Here's a step-by-step guide on how to use a car diagnostics scanner to identify the anti-pollution fault in your Peugeot 207:
Step 1: Purchase or Borrow a Car Diagnostics Scanner
You can buy car diagnostics scanners online or from automotive stores. There are different types of scanners available, from basic code readers to more advanced scan tools with additional features. Choose one that suits your needs and budget. If you don't want to purchase a scanner, you can consider borrowing one from an auto parts store or a friend.
Step 2: Locate the Diagnostic Port in Your Peugeot 207
The diagnostic port, also known as the OBD-II port, is usually located under the dashboard on the driver's side. It is often near the steering wheel or the glove compartment. Once you've located the port, plug the scanner into it.
Step 3: Turn on the Scanner and Read the Error Codes
Power on the diagnostics scanner and allow it to establish a connection with your vehicle. Navigate through the scanner's menu to find the "Read Fault Codes" or "Diagnostics" section. This will bring up a list of error codes stored in your vehicle's computer system.
Step 4: Interpret the Error Codes
The error codes will consist of one or more letters followed by numbers, such as P0123. Write down the codes displayed on the scanner. Each code indicates a specific issue or system. For example, codes starting with "P" typically relate to the powertrain or engine, while codes starting with "B" are related to the body of the vehicle, including the air conditioning and lighting systems.
Step 5: Research the Error Codes
Use the error codes you've recorded to research and identify the specific issues with your Peugeot 207. You can search for the codes online or refer to a repair manual specific to your vehicle. This will help you understand the potential causes of the anti-pollution fault and the necessary repairs or adjustments.
Step 6: Clear the Error Codes (Optional)
Once you've identified the issues, you may want to clear the error codes from your vehicle's computer system. This can be done through the diagnostics scanner. However, keep in mind that clearing the codes does not fix the underlying problem. Repairs or adjustments may still be needed to resolve the anti-pollution fault completely.
Using a car diagnostics scanner can be a helpful first step in identifying the anti-pollution fault in your Peugeot 207. However, it is essential to interpret the error codes accurately and consider seeking professional assistance for complex issues or repairs.
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Frequently asked questions
This is a common fault in the Peugeot 207, which is a generic error message that could be associated with many issues.
You will need to connect your car to a code reader to identify the actual error codes.
You can then search for the part number on websites like ecutesting.com, which will allow you to identify the issue and find pricing information for repairs.
Some common issues include a faulty battery, diesel injector, inlet cam position sensor, or spark plug.
It is recommended that you take your car to a proper garage to have it looked at by a professional, especially if the problem is unclear.
