BMW 7 Series (2010): Persistent engine light, loss of power and other symptoms - Possible fuel pressure sensor fault?

Hello, I have had similar experiences with my BMW 5 series (2012 model, gasoline engine). I describe myself as someone with some experience around cars. In my case, the cable connections were defective. After noticing the problem, I immediately went to my garage. The diagnosis was confirmed, so I had them repaired. The cost was 155 euros. It could be the same with your car, but without more specific details it's difficult to give more accurate advice. Can you perhaps give more details about your car - mileage, previous repairs, service record etc.? Then we can help you better.

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Hi, thanks for the tip. My BMW already has 265814 km on the clock. I had the last inspection done before I noticed the current problems. Maybe I should visit my garage again and have the error read out. But your recommendation gives me a new approach, thank you!

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No problem, always welcome! With the high mileage, there could actually be some signs of wear. In any case, you're not doing anything wrong with the fault readout in the workshop. Normally, you should be able to see where the problem lies. However, get good advice from the workshop and ask if anything is unclear. Keep us up to date here in the forum, maybe it will help others with similar problems. And don't worry, an old hand like our BMW can handle it! Don't hang your head.

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That's very reassuring to hear, thank you! I will definitely follow your advice and keep a close eye on the situation in the workshop. I'll get back to you as soon as I have any news. Hopefully my findings can then help others too. And you're right, our BMW is a real warrior! I won't hang my head. Bye and thanks again for your help!

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Hi, have a BMW 118i E88 4 cylinder that keeps spitting out some errors. Today I read out the car with the adapter and got some error codes. 1. 002AF4 Nitrogen oxide sensor, electrical at (km203032) 2. 002AF2 DME: Nitrogen oxide sensor, lambda linear at (km203032) 3. 002AF6 DME: Nitrogen oxide sensor, lambda binary at (km203032) 4. 002AF9 NOX nitrogen oxide sensor, signal: thrust test at (km205920) 5. 002AF8 Nitrogen oxide sensor, lambda linear: thrust test at (km207088) 6. 0029F3 DME: fuel low pressure system electrical at (km210416) 7. 002A26 Catalytic converter, conversion in overrun mode At (km204840) 8. 0030DC DME: Nitrogen oxide sensor, heating at (km 212504) 9. 002A2D DME: Low fuel pressure system, fuel pressure at (km: 211440) These are all the error codes that are displayed. The car currently has 212640km on it. It has other faults such as brake low pressure, plausibility and defective lights, but the faults are not as urgent as the faults listed above. Would like to ask for advice. LG

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Based on the error codes you've provided, it seems like there might be multiple issues with your BMW. However, the recurring theme here is the nitrogen oxide sensor and the fuel pressure system. I would recommend starting with the nitrogen oxide sensor. This sensor is crucial for your car's emission system and can cause a variety of problems if it's not functioning properly. It might need to be replaced. Next, check the fuel pressure system. The low fuel pressure could be due to a variety of reasons such as a failing fuel pump, clogged fuel filter, or a faulty fuel pressure regulator. Given the complexity of these issues, I would strongly recommend taking your car to a professional mechanic for a thorough inspection. These are not issues that should be ignored as they can lead to more serious problems down the line. Please keep us updated on your progress and don't hesitate to ask if you have any further questions.

Many thanks for the quick reply, I will definitely check what is going on.

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Need instructions on how to change the fuel pressure sensor.

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Changing the fuel pressure sensor is a task that requires some mechanical knowledge. Here are the basic steps: 1. First, relieve the fuel system pressure. This can usually be done by removing the fuel pump fuse and starting the car until it dies. 2. Locate the fuel pressure sensor. It's typically on the fuel rail which houses the fuel injectors. 3. Disconnect the electrical connector from the sensor. 4. Using a wrench, remove the sensor. Be careful not to damage the fuel rail. 5. Install the new sensor and tighten it with the wrench. Be careful not to over-tighten as this can damage the sensor. 6. Reconnect the electrical connector. 7. Reinstall the fuel pump fuse and start the car. Check for any leaks around the new sensor. Remember, if you're not comfortable doing this yourself, it's best to take your car to a professional mechanic. Also, always follow safety procedures when working with the fuel system. Let us know how it goes and if you have any other questions.