Mercedes AdBlue DPF And NOX Problem Fix | P229F91
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- เผยแพร่เมื่อ 25 ก.ค. 2023
- Mercedes NOx Sensor Replacement | Mercedes AdBlue Warning Message and DPF Problem Fix | P229F91
In this comprehensive guide, learn how to replace the NOx sensor in a Mercedes C220 to fix the persistent AdBlue warning message and resolve the troublesome DPF (Diesel Particulate Filter) problem associated with the error code P229F91. Our step-by-step tutorial ensures a smooth and
efficient repair process for your Mercedes C220, helping you maintain optimal engine performance. Don't let a faulty NOx sensor and AdBlue system hinder your driving experience. Watch the video now and get your car back on the road!
🟥P229F91 - NOx Sensor 2 (Cylinder Bank 1) has a malfunction. the Component is Outside of it Expected Range - Current, Stored
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Thank you for this great video. I have the same issue with my E300 W212 check engine light on because of a faulty Nox sensor. My question is, can the probe be cleaned? What are the main causes of a faulty Nox sensor?
You're welcome! I'm glad you found the video helpful. The NOx (nitrogen oxide) sensor in your Mercedes-Benz E300 W212 is a critical component of the emissions control system. If it's malfunctioning and causing the check engine light to come on, it's important to address the issue.
Cleaning the NOx sensor is not recommended , but sometimes its works.
Common causes of a faulty NOx sensor
Age and wear: Like all sensors, NOx sensors can deteriorate over time due to exposure to extreme temperatures and contaminants.
Contamination: Exposure to certain chemicals or contaminants in the exhaust gases can affect the sensor's performance.
Wiring or connector issues: Faulty wiring or poor connections can disrupt the sensor's ability to transmit accurate data to the engine control module (ECM).
Exhaust leaks: Leaks in the exhaust system before or after the sensor can introduce excess oxygen or other gases, leading to inaccurate readings.
Exposure to extreme temperatures: NOx sensors can be affected by extreme heat or cold, which can lead to failure.
Oil or coolant contamination: If there's a leak from the engine or cooling system that allows oil or coolant to mix with the exhaust gases, it can damage the NOx sensor.
In most cases, when a NOx sensor is faulty, it's best to replace it with a new sensor designed for your specific vehicle model. This ensures proper functionality and compliance with emission regulations. Additionally, a faulty NOx sensor can impact your vehicle's performance and emissions, so it's essential to address the issue to maintain optimal efficiency and reduce emissions.
@@sanumotorswithcharlie Thank you for your tips and valuable information.
Hi, Thank you for the tips. May I ask what diagnosing tool you are using? Do you know it is possible to check/delete faults with "LAUNCH Creader Elite" tool?
Thanks again
PLEASE follow this link
th-cam.com/video/x0SSgJY5vpk/w-d-xo.html
Hi, I have cleaned completely the adblue injector and replaced both Nox sensors, upstream and downstream. It is a 2017 w205 C220d (not bluetec). Can you adapt the new sensors to the control unit? And how much?
Please contact Charlie 07551021029
Thank you
Hi , very good video and good information 👍I am now a subscriber. I have a U029E87 and a U029E00 fault codes which both say "communication with nox sensor 2 has a malfunction". Is there any way of checking the nox sensor before I buy a new one...or is it almost guaranteed to be a fault with the sensor? Thanks
Thank you for subscribe and follow us.
I’m assuming it’s c class. There is many ways to check sensors. But easy way to clean adblue sensor. And Swipe NOx sensor, reset warning lights. Use the car and take code again. Then you have a answer
Hi. I have recently changed the nox sensor 2 bank 1 and cleaned the adblue injector like shown in your video. However I have a code shown as P204FFD and want to ask what that code is and any solution to fix the issue? Upon reading it says adblue system bank 1 fault.
The error code P204FFD typically indicates an issue with the AdBlue system, specifically related to Bank 1. AdBlue is a crucial component in modern diesel vehicles, as it helps to reduce harmful emissions by converting nitrogen oxides (NOx) into harmless nitrogen and water vapor.
Here's what you can do to diagnose and potentially fix the issue:
Check AdBlue Levels: Ensure that your AdBlue tank is adequately filled. Low AdBlue levels can trigger this fault code. If the level is low, refill the AdBlue tank with fresh AdBlue fluid to the recommended level.
Inspect for Leaks: Inspect the AdBlue system components, including hoses, connections, and the AdBlue tank itself, for any signs of leaks or damage. Leaks can cause a drop in pressure or improper AdBlue distribution, leading to system faults. Repair or replace any damaged components as necessary.
Test AdBlue Injector: Even though you've cleaned the AdBlue injector, there's a possibility it may not be functioning correctly. Perform a test to ensure that the injector is spraying AdBlue properly. If necessary, replace the injector with a new one.
Check NOx Sensor: Since you've already replaced the NOx sensor on Bank 1, ensure that it is installed correctly and functioning properly. Faulty NOx sensor readings can sometimes trigger AdBlue system faults.
Reset Fault Codes: After performing any maintenance or repairs, use an OBD-II scanner to clear the fault codes from the vehicle's computer. This will reset the system and allow you to monitor if the issue persists.
Professional Diagnosis: If the issue persists after checking the above steps, it may be necessary to seek assistance from a qualified mechanic or dealership. They can perform a more thorough diagnostic scan to pinpoint the exact cause of the fault and recommend appropriate repairs.
Remember to consult your vehicle's manual or seek professional assistance if you're unsure about any aspect of the diagnostic or repair process.
i got the same problem but not nox sensor im showing dtc P220F and ive noticed the start stop light doesnt go green like in your video so theres still a problem somewhere
DTC P220F is a diagnostic trouble code related to the exhaust aftertreatment system. It typically indicates an issue with the Reductant System Performance. The "start-stop" light not turning green could be related to this issue, as it may be preventing the engine from entering the start-stop mode. Here are some steps to help you diagnose and potentially resolve the problem:
Check the DEF (Diesel Exhaust Fluid) Level: Ensure that the DEF tank is filled with the correct DEF fluid. Low DEF levels can trigger P220F and other related codes.
Inspect for DEF Contamination: Contaminated DEF fluid can cause issues with the aftertreatment system. Check for any signs of contamination or foreign substances in the DEF tank.
Scan for Additional Fault Codes: Use a diagnostic scanner to check for any other fault codes that might provide additional information about the problem.
Check for Exhaust Leaks: Inspect the exhaust system for any leaks, as leaks can disrupt the proper functioning of the aftertreatment system.
Inspect Sensors and Wiring: Check the wiring and connectors for the NOx sensor and other relevant sensors in the aftertreatment system. Damaged or corroded wires can lead to sensor issues.
Perform a Forced Regeneration: Some vehicles have the capability to perform a forced regeneration of the DPF (Diesel Particulate Filter) and aftertreatment system. Consult your vehicle's manual or a professional mechanic to see if this is an option for your vehicle.
Consult a Professional Mechanic: If you cannot identify and resolve the issue on your own, it's advisable to seek the help of a professional mechanic or dealership technician. They will have access to specialized diagnostic tools and can perform more in-depth diagnostics to pinpoint the problem accurately.
Remember that diagnosing and repairing issues related to the aftertreatment system can be complex, and it's crucial to address them promptly to ensure the proper functioning of your vehicle and to prevent further damage
wow im impressed you seem to know what your doing most garages i spoke to say it's a nox sensor can you book me in@@sanumotorswithcharlie
have question? few days ago engine orange light came up in my c coupe 2019. I took it to diagnosis and showed me nox sensor fault (order 1, sensor 2). The guy erased the diagosis on computer attached to my car, and after that, orange light turns off (and it is stays off from now on - already 3 days..). I wander if it will show up again in few days or not? Do I have to replace sensor and for how long is it safe to drive like this. I do not want to damage my engine but I have to travel every day..
The appearance and disappearance of the engine orange light (often referred to as the check engine light) can sometimes be a bit unpredictable. When the check engine light comes on, it indicates that the car's onboard computer (ECU) has detected a fault in one of the systems or sensors. In your case, it was the NOx (nitrogen oxide) sensor.
When the technician erased the diagnostic trouble code (DTC) associated with the NOx sensor fault, the check engine light turned off because the ECU believed the issue had been resolved. However, this doesn't necessarily mean the problem is completely fixed.
The NOx sensor plays a crucial role in the emissions control system of your vehicle. If it fails or malfunctions, it can potentially affect your vehicle's emissions performance and overall engine efficiency. Continuing to drive with a faulty sensor may not immediately cause catastrophic damage to your engine, but it's not recommended for the long term.
Here are a few things to consider:
The light may come back: Sometimes, a sensor issue can be intermittent, and the light may come back after some time. If it does, it's a sign that the problem is ongoing and should be addressed.
Emissions and performance: A faulty NOx sensor can affect your vehicle's emissions and fuel efficiency. It may not perform optimally in terms of emissions, and your fuel economy could suffer.
Legal requirements: Depending on your location, there may be legal requirements regarding emissions control systems. It's essential to ensure your vehicle complies with local regulations.
Warranty: If your vehicle is still under warranty, the sensor replacement may be covered. It's worth checking with your dealership.
Long-term damage: While driving with a faulty NOx sensor may not cause immediate engine damage, prolonged use without fixing the issue could potentially lead to other problems down the line, including catalytic converter damage.
I recommend contacting your dealership or a trusted mechanic to have the NOx sensor properly diagnosed and replaced if necessary. They can provide you with a more accurate assessment of the sensor's condition and whether it should be replaced. In the meantime, keep an eye on your vehicle's performance and any signs of the check engine light returning.
ALSO THIS VIDEO MIGHT BE HELP FOR YOU
th-cam.com/video/9yFSQ1XEhYo/w-d-xo.html
thank You Charlie for quick response and advice, If I understood You correctly, if orange engine light stays off from now on - it may be temporary glitch, and it is safe to drive? but if it turns on again in a few days - i should contact my mechanic to have NOx sensor properly diagnosed and possibly replaced . @@sanumotorswithcharlie
Hello Charly, you have a new subscriber!
First of all I wanted to thank you for the work you do.
I have a Mercedes c class 220d bluetec from 2015 with the following errors:
P229F91: the same as the video
U010E87: communication with the adblue control unit has an operating irregularity. Missing message.
U029E02: Communication with NOx 2 has a malfunction. There is a general signal error.
I erased all the errors and cleaned the adblue injector that was clogged, but after 3000 km aprox. the error p229f91 has appeared again.
If I lived near you I wouldn't hesitate to take my car to you but I don't even live in the UK.
What do you recommend to do? Is there a possibility to solve the error without changing parts? could swap the fwd sensor with the aft sensor in case of the same PN.
Thanks and keep it up!
Hi there!
Thank you so much for subscribing and for your kind words! I'm glad my content has been helpful to you.
Regarding the errors you're experiencing with your Mercedes C Class, it sounds like you've already taken some steps to address them by clearing the errors and cleaning the clogged Adblue injector. However, it's concerning that the P229F91 error has reappeared after a relatively short period.
Unfortunately, without being able to physically inspect your car, it's challenging to provide a definitive solution. However, based on the errors you've listed, it seems like there could be underlying issues with the Adblue system and NOx sensors.
Since you've already cleaned the Adblue injector, it might be worth checking other components of the Adblue system such as the Adblue pump, tank, and lines to ensure they're functioning properly. Additionally, for the U010E87 and U029E02 errors related to communication irregularities with the Adblue control unit and NOx sensors respectively, there may be wiring issues or faults within the control units themselves that need to be addressed.
As for your question about swapping the forward and aft sensors, it's possible that could be a temporary workaround, but it's not a guaranteed solution and could potentially cause other issues down the line.
If possible, I would recommend consulting with a qualified mechanic or dealership who specializes in Mercedes vehicles. They'll have the expertise and diagnostic tools necessary to pinpoint the exact cause of the errors and recommend the most appropriate course of action.
I hope this helps, and I wish you the best of luck in resolving the issues with your car! If you have any further questions, feel free to reach out. Keep me updated on your progress, and again, thank you for your support!
Thank You
7
thank you
Those T-shirt interruptions very annoying, terrible 👎
Thanks, for your valuable comments, charity is really difficult, I think if you want to watch real content it is not a hindrance.🙂🤔