Increased Emissions? Pulled codes...

Donc j'ai déjà googlé pendant quelques semaines et je n'ai rien vu qui ressemble aux codes que j'ai tirés. J'envisage de prendre une Innova 3160 pour m'aider à résoudre les problèmes, mais avant je me suis dit que je vous choisirais tous. .

Ce qui s'est passé...
La première fois que j'étais à environ 1/4 réservoir d'essence (pas sûr si cela compte, mais les codes ont mentionné le niveau de carburant donc je pensais que cela pourrait être pertinent). Ma voiture a montré un voyant de contrôle du moteur et affiché "Émissions accrues" sur l'écran iDrive.

J'ai eu les codes tirés par un ami à mon magasin et nous les avons réinitialisés à ce moment-là aussi. Je vais énumérer les codes ci-dessous...

Après les avoir réinitialisés, il est resté à l'écart pendant environ 3 semaines et est ensuite revenu hier soir. La voiture semble fonctionner et conduire bien, mais montre le moteur de service bientôt léger et les émissions accrues.

Voici les codes que la voiture a montré après la première fois qu'elle a fait défaut...

Codes:
279D - Gestion de l'alimentation, violation du courant en circuit fermé
2722 - Capteur de pression du carburant, signal
27D0 - Adaptation du régulateur de pression du carburant
27BB - Système de carburant, lambda/charge plausibilité, banque 2
27C1 - Info: Réservoir vide à l'entrée de faute

Après avoir effacé les codes et que la faute soit revenue, c'est le seul code qui est revenu...
P0175 x2 - Système trop riche (Banque 2)

Je ne sais pas si tous ces codes étaient liés à l'augmentation des émissions, mais j'ai pensé que je listerais tous les codes qui ont été affichés lorsque nous les avons retirés.

Une idée de ce que cette combinaison de codes indiquerait? S'il y a d'autres informations que je pourrais fournir, s'il vous plaît laissez-moi savoir !! Merci d'avance pour votre aide !!

J'ai essayé de poster ceci sur le forum le plus approprié. S'il vous plaît déplacer s'il y a un meilleur emplacement...

Les codes ont été retirés aujourd'hui depuis son retour et cette fois, un seul code a été signalé.

P0175 x2 - Système trop riche (Banque 2)

Cette aide ?

Vous devez remplacer un de vos capteurs O2 en amont. J'ai le même code et je vais remplacer le mien demain pour 350 $ installés.

Flip a écrit

Les codes ont été retirés aujourd'hui depuis son retour et cette fois, un seul code a été signalé.

P0175 x2 - Système trop riche (Banque 2)

Cette aide ?

+1 sur le capteur O2 amont. C'est celui qui lit le mélange air/carburant.

Une idée de la façon dont je peux dépanner pour savoir lequel c'est? Je prévois d'acheter une Innova 3160 pour ce genre de chose. Je devrais pouvoir utiliser la fonctionnalité de données en direct pour les vérifier tous oui?

La voiture n'a que 52 km. Est-il possible que l'O2 ait déjà mal tourné ? J'ai lu que ça pourrait être une fuite de vide quelque part ou quelque chose du genre. Ce code unique laisserait-il la possibilité d'autres problèmes ou serait-il clairement O2?

Les 4 capteurs O2 sont-ils tous le même numéro de pièce ? Des suggestions sur le meilleur endroit pour commander en ligne? En amont, c'est celui de la variété ?

1 sur ce diagramme.
http://realoem.com/bmw/showparts.do?modelVA93&mospid50624&btnr18_0746&hg18&fg10

If you had a vacuum leak, it would have shown up as system too lean (too much air in the system). When it is too rich, either your system is dumping too much fuel, or the system is not reading the mixture right. And yeah, an O2 sensor can go bad at any time, but it can also last over 100k miles too. The way you can tell which one it is, the system will tell you, upstream or down stream ( upstream-before cats, down stream-after cats) and then bank 1 or bank 2 ( bank 1- where the number 1 cylinder is, bank 2- the opposite side). Hope that this will help. Let me know if you have more questions.

Eric

elm3 wrote

If you had a vacuum leak, it would have shown up as system too lean (too much air in the system). When it is too rich, either your system is dumping too much fuel, or the system is not reading the mixture right. And yeah, an O2 sensor can go bad at any time, but it can also last over 100k miles too. The way you can tell which one it is, the system will tell you, upstream or down stream ( upstream-before cats, down stream-after cats) and then bank 1 or bank 2 ( bank 1- where the number 1 cylinder is, bank 2- the opposite side). Hope that this will help. Let me know if you have more questions.

Eric

Great, that helps a ton! I'm going to get the car up in the air and visually inspect to see if anything is damaged and go from there I guess...

flip wrote

Great, that helps a ton! I'm going to get the car up in the air and visually inspect to see if anything is damaged and go from there I guess...

Let me know if you need help. I'm probably about 30 minutes north of you. And can help you change it. I got a lot of tools and space to do this. Plus I have a scanner and can delete your codes when done.

Eric

elm3 wrote

Let me know if you need help. I'm probably about 30 minutes north of you. And can help you change it. I got a lot of tools and space to do this. Plus I have a scanner and can delete your codes when done.

Eric

Awesome, I may take you up on that! I'm fairly experienced with cars but it always helps to have experienced hands when working on a vehicle that I'm not familiar with...

So looks like this is what I'll need to order?
http://www.rmeuropean.com/Part-Number/Oxygen-Sensor-__11787537984_BOS_94E6B777.aspx

If you know of a better place to order please let me know. I got the part number from realoem so i believe its the correct part...

flip wrote

Awesome, I may take you up on that! I'm fairly experienced with cars but it always helps to have experienced hands when working on a vehicle that I'm not familiar with...

So looks like this is what I'll need to order?
http://www.rmeuropean.com/Part-Number/Oxygen-Sensor-__11787537984_BOS_94E6B777.aspx

If you know of a better place to order please let me know. I got the part number from realoem so i believe its the correct part...

Try Autozone or Napa. You can give them the part number and see if they can do better, price wise. Usually they can.

Code came back only after a few days this time so I guess I'd better get on the fix... Going to price the O2 tomorrow.

One more question, does anyone know which side cylinder #1 is? From my searches I've read it should be closest to the radiator, passenger side. Is this correct?

flip wrote

One more question, does anyone know which side cylinder #1 is? From my searches I've read it should be closest to the radiator, passenger side. Is this correct?

You are correct. So if you are looking at the engine, number one cylinder is the one on your left as you are looking at it. So bank 1 is on your left. If you need to change the upstream O2 sensor on bank 1, it is the one on your left, before the cats. Hope that this makes sense. Let me know if you need help, I don not mind.

Eric

elm3 wrote

You are correct. So if you are looking at the engine, number one cylinder is the one on your left as you are looking at it. So bank 1 is on your left. If you need to change the upstream O2 sensor on bank 1, it is the one on your left, before the cats. Hope that this makes sense. Let me know if you need help, I don not mind.

Eric

Yep, makes perfect sense, thanks! And I may still hit you up for an extra hand when I do this... I may have lost my O2 socket so extra tools may help .

flip wrote

Yep, makes perfect sense, thanks! And I may still hit you up for an extra hand when I do this... I may have lost my O2 socket so extra tools may help .

Let me know.

Ended up replacing the O2 today. Was quite simple as expected... Car feels like it runs much smoother and I seem to have a good bit of performance back on the top end.

This time when we pulled the codes before we deleted them, we got misfires on all cyl's except for #1. I'm guessing this is simply from dumping too much fuel.

I drove it about 10 miles and the code hasn't come back but I won't be convinced for a week or so. I'll update in a bit one way or the other.

Thanks again elm3 for your offer to help and for your help here, and to everyone else who contributed! Let me know if you attend any local BMW meets, i'd still be happy to make an m3 buddy!

So after replacing the O2 sensor, the code came back. I've ordered an innova to pull the codes and help diagnose... Any suggestions? Not sure what else this could be.

Is it normal for our cars to idle rough for a bit when cold started? Mine lopes a bit when first started in the morning sometimes.

flip wrote

Is it normal for our cars to idle rough for a bit when cold started? Mine lopes a bit when first started in the morning sometimes.

Yes, this is normal. Our cars don't have the MAF sensor. So it starts out rich, to warm up the cats. Then it will smooth out. Let me know if you still need help on your O2 sensors.

Eric

elm3 wrote

Yes, this is normal. Our cars don't have the MAF sensor. So it starts out rich, to warm up the cats. Then it will smooth out. Let me know if you still need help on your O2 sensors.

Eric

Ok cool. I did read that other places as well. I dont' mind, always sounds more agressive like my drift car tune .

I got the O2 done fairly easily but the code came back so I'm waiting on my code reader to get in in the mail. I'll post back up as soon as I get that and pull the codes again.

I had the codes reset JUST before I replaced the O2. I drove it home from the auto store after resetting it and replaced the O2. The code came back days later. Is there any way resetting it before replacing the O2 could cause the code to come back days later? Or is there likely simply another code (or the same code)?