Opel Astra J 1.4 Turbo: P0171 Check Engine Error, Tugging & Metallic Grinding Issues

Hello

I am new here if I write badly I am very sorry. I have a problem with Opel Astra j 1.4 Turbo petrol only. Specifically, it's about the P0171 check engine error. Yesterday, while driving, the car began to gently tug at me, then the mentioned error jumped out and additionally can also display the error check the track control system something there, i.e. as if I had an ABS sensor. I went to a mechanic today and he told me that it could be a fuel pump and many other factors, but he can't tell me without dismantling the engine. I will also mention that sometimes, although it was not always heard such metallic grinds under the hood (2-3 and stopped). Currently, the engine works normally, however, this light stays on all the time, this indicator additionally turns on the fan on a warm engine. Who had a similar problem? What can this be caused by and can I use the car at the moment because I will not be able to get to work (unless I buy another stroller quickly)

This is quite a common problem in Astra, a lean fuel / air mixture, however, personally I would not let rummage in the pump, because it is very unlikely, a very common reason for this error is the intake of left air, dirty / broken flow meter, the cover is also a common problem valves, in which there is a valve / membrane for separating oil / air from the engine block and which likes to seal and then this error pops up, it can also be a lambda probe, before you start to disassemble the engine you have a few things that you can even check yourself drive a car? theoretically, it is not known what really is wrong, if it is only a sensor and the fuel mixture is fairly normal, no problem, however, if the mixture is really poor, then using the car can be risky, on the other hand you say that the car is quite normal so it's probably some sensor.

Edit, I just put him to a trusted mechanic and the car lost power on the route, there were no jumps at revs but he did not get into it as it should. There was also throttling the engine as if the filter was stuffed up, something like that. We'll see what I'll find out how the mechanic checks the readings, etc. I hope it's nothing that will deplete my wallet. If I know what was wrong, I will definitely share.

Mladenick you were right, the valve cover hit and sucked in the left air. The car is already done and it sounds like stupid. It is a pity that Oplasian parts are so expensive Regards

Hello.
I bury the subject.
I have the same problem, the check engine light came on and the p0171 error crashed. The engine behaves normally. It seems to me that he smokes a little more from the exhaust, even when he is hot. When I put my finger to the gap on the valve cover where the diaphragm is, nothing blows. When I check for saliva, bubbles get gently. I don't know if it can be this way. Did you blow from the membrane? Has anyone had a similar problem?
Opel Meriva B, 1.4 Turbo 140 HP, year 2011

If you mean this gasket under the valve cover then I had the same thing ...

Hello.
To date, the problem has not been solved, error P0171 keeps popping up. One of the mechanics after hearing what this error immediately gave up repair. On Thursday I have an appointment for another one. What I noticed is that the engine heats up from the place where the membrane is located (the gap where the pneumothorax is checked), the air comes out lightly, I checked it with liquid and air bubbles appear. Do any of you know if this should be the case? Or maybe there shouldn't be any air out there?
In the picture what place I mean.

Hello.
I had a similar problem with my Meriva B two years ago. (A14NEL engine). The problem resulted from a broken valve in the intake manifold.
The workshop with "www [dot] valve-cover [dot] pl" fixed it for me.
Maybe it will be useful to someone.

Hello.
I have also been tired of the error P0171 for some time. The frozen frame read from the application speaks of a closed loop that uses the feedback concentration of the oxygen sensor to determine the fuel mixture. I checked the voltage graphs from both probes but they don't tell me much. The unknown influence of the second probe on the fuel dose is also interesting, I do not know if it should be so or if something is wrong. I attach charts and a frozen frame, someone can determine if any of the probes is the cause of the error, and if not, where the problem may be.
Thank you in advance for your help and best regards!