Help me with my first code please 2b42

détails du code

misfire with emissions degradation cyl 1/ moteur misfire with emissions degradation cyl 1

code 2b42

J'ai parfois des hésitations, comme un raté. J'ai commandé de nouvelles prises, vous pensez que j'ai besoin d'une nouvelle bobine ?

J'allais y aller et changer les bobines pour voir si ça allait suivre. Toute autre aide est appréciée.

Je ne connais pas TBH mais en regardant le collant ci-dessus:

2B41 - P0300 (un de moins)

http://www.m3post.com/forums/showpost.php?p15283428&postcount29

2B41 - P0300
Informations sauvegardées dans DME
Code défaut 2B41 - P0300
Texte erroné Misfire avec découpe, plusieurs cylindres
Incendie aléatoire/à cylindres multiples détecté
Condition pour l'identification de la faute condition d'essai: Miss capable d'endommager le chat sur plusieurs cylindres
État du terminal : Terminal 15
Condition de tension: aucun
Varie en fonction de la charge et du régime
Action en service Noter les codes d'erreur sélectifs enregistrés relatifs aux bouteilles individuelles
Effet de défaut et avertissement de panne
Régime moteur limité
Puissance réduite
MIL après que le moteur tourne 2x
Rugueux
Avertissement: MIL, EML, message CC, programme de sauvegarde
Instructions de service Aucune

moteur fonctionne parfaitement juste obtenir un léger hoquet parfois. comme une bobine / plug est mauvais

OK peut-être une tentative2 Simple google :

2B42 Combustion ratée avec détérioration des émissions cyl 1

si son seul cylindre pourrait être une étincelle, si multiple pourrait être ICV (vanne de commande d'entrée).

mais mal laisser les membres plus expérimentés confirmer/refuser.

could also be injector if one cylinder.

2B42 - P0301, Post-33

It looks like P0301 maps to multiple BMW codes. That makes sense because I would expect BMW codes to be more specific than a generic "misfire cylinder 1" P0301 error.

[btable=100][btrhead=FFFFFF][btd]2B42 - P0301[/btd][btd][/btd][/btrhead][btrhead=FFFFFF][btd]Information saved in[/btd][btd]DME[/btd][/btrhead][btrhead=FFFFFF][btd]Fault code[/btd][btd]2B42 - P0301[/btd][/btrhead][btrhead=FFFFFF][btd]Fault text[/btd][btd]Misfire impairing exhaust emission, cyl. 1[/btd][/btrhead][btrhead=FFFFFF][btd]Fault description[/btd][btd]Cylinder 1 Misfire Detected[/btd][/btrhead][btrhead=FFFFFF][btd]Condition for fault identification[/btd][btd]Test condition: No spark detected in ionic current signal[/btd][/btrhead][btrhead=FFFFFF][btd][/btd][btd]Terminal condition: Terminal 15[/btd][/btrhead][btrhead=FFFFFF][btd][/btd][btd]Voltage condition: none[/btd][/btrhead][btrhead=FFFFFF][btd]Condition for fault memory entry[/btd][btd]Varies according to load and rpm[/btd][/btrhead][btrhead=FFFFFF][btd]Action in service[/btd][btd]1. Check spark plug, interchange with other plug or replace to localize fault[/btd][/btrhead][btrhead=FFFFFF][btd][/btd][btd]2. Exchange ignition coil with another coil to localize fault, replace as indicated.[/btd][/btrhead][btrhead=FFFFFF][btd][/btd][btd]3. Check plug and wiring harness to ignition coil.[/btd][/btrhead][btrhead=FFFFFF][btd]Fault effect and breakdown warning[/btd][btd]CC message[/btd][/btrhead][btrhead=FFFFFF][btd][/btd][btd]Engine speed limited[/btd][/btrhead][btrhead=FFFFFF][btd][/btd][btd]Reduced power[/btd][/btrhead][btrhead=FFFFFF][btd][/btd][btd]MIL after engine runs 2x[/btd][/btrhead][btrhead=FFFFFF][btd][/btd][btd]Rough idle[/btd][/btrhead][btrhead=FFFFFF][btd]Driver information[/btd][btd]Warning light: MIL[/btd][/btrhead][btrhead=FFFFFF][btd]Service instruction[/btd][btd]None[/btd][/btrhead][/btable]

changing out coil and plug tomorrow. ill keep you guys updated

Giorgia wrote  

changing out coil and plug tomorrow. ill keep you guys updated

I would first move the coil to see if the fault moves.

Mike Benvo wrote

I would first move the coil to see if the fault moves.

Okay so i moved the coil and also inspected the spark plug. i really dont know what im looking at anyway lol. So i turned the car and and checked for any codes and nothing was present

When i removed the coil it was on there tight and the spark plug also, so there wasent anything loose that i could see. im going to assume the coil is going bad but why would it work in anther port....... anyway im going to change all the plugs and replace that coil.

Anyway lets see if anything comes back

I should have added that no codes came up on the car itself. i ran the BMWHAT APP with the bluetooth scanner and it found it. was also able to code the car. thing is awesome

drove around all day with no codes or hesitations/misfires. im going to go ahead and change the plugs and that one coil anyway. So we now know that code is either a coil or plug and nothing else.

See this thread http://www.m3post.com/forums/showthread.php?t=845635&highlight=ignition+coil.

Just do the plugs, I wouldn't bother with the coil as it should throw its own specific code - at least that was the case for me when coil #8 went and I used the above thread as reference.

///mawana wrote

See this thread http://www.m3post.com/forums/showthread.php?t=845635&highlight=ignition+coil.

Just do the plugs, I wouldn't bother with the coil as it should throw its own specific code - at least that was the case for me when coil #8 went and I used the above thread as reference.

Nice!!! thanks for posting that.

Giorgia wrote

Nice!!! thanks for posting that. guess my code could be just the spark plug then.

If you are over 37k miles on the same plugs, most likely they are the culprit.

So all my parts came in and for some reason i decide to check the glove compartment and i find all the service history........

So look what i find.... my code said cyl. 1 misfire because the dealer took it out of 2 and put it in one to see if the problem followed hahahhaah. so it turned out to be a failing coil. All the spark plugs were just replaced.

Spark plugs will go for sale lol. can belive the lazy dealer didnt just change that coil.....

Apparently the fault never returned after they replaced the spark plugs and swapped them at the same time. The customer never brought the car back for the warning, and them appears to have sold it. Unless you just don't remember having the issue with your own car, but that doesn't seem to be the case. Ironically this appears to be the same diagnostic path you were going to take here. Speaking of lazy, who isn't familiar with their own service history?

MilehighM3 wrote

Apparently the fault never returned after they replaced the spark plugs and swapped them at the same time. The customer never brought the car back for the warning, and them appears to have sold it. Unless you just don't remember having the issue with your own car, but that doesn't seem to be the case. Ironically this appears to be the same diagnostic path you were going to take here. Speaking of lazy, who isn't familiar with their own service history?

Word