[WesleyC]

Hi guys,

I'm having a bit of a problem with my 335i. About a month ago, I got an engine malfunction message while I was driving and the car started to stall. I pulled over right away, turned off the car, waited a minute or two and and turned it on again. Everything was ok and I was able to drive home, albeit in limp mode.

The problem is that I had enabled auto code clearing and any codes that came up were erased so I cannot see what the problem is. I've researched the problem and it really could be a bunch of different things. I cannot take the car into the dealership because there are no codes and they won't be able to do anything.

Even though my car has been in limp mode for about a month, I continue to drive it (just around town, for the most part and the occasional freeway trip. I am not pushing the car at all). hoping for the codes to come back (I disabled the code clearing). I've driven maybe 200 miles or so and the codes haven't come back.

Any suggestions?

Thanks,
Wes

[orionredwing]

Not much to go on based on the info you supplied. Could be a lot of things mentioned in the other limp mode threads. Probably need to wait for a code to trip again before we can help.

[bigdnno98]

You try removing the tune? This sounds like it won't help but at least you can eliminate the tune as the cause.

[WesleyC]

To clarify, I'm not looking for any advice about the actual problem. Like I said, it can be one of many things so there is no point in asking for help regarding that. Based on my research, I believe that it may be the steering angle sensor, but that's besides the point. I just want the codes to come back so I can know for sure.

Once erased, do all codes eventually come back if the problem hasn't been solved?

[techwhiz]

The codes will come back if the problem persists. If you are throwing codes; then clear the codes without fixing the issue. They will come back.

[M3Tuner44]

I had the same issue. My car was at about 50,000 miles and it would go into limp mode if I would wot it and stay in limp mode for a few minutes and eventually go back to normal. It threw and engine malfunction on my screen as well. I changed the plugs and never saw the issue again.

[WesleyC]

Originally Posted by techwhiz

The codes will come back if the problem persists. If you are throwing codes; then clear the codes without fixing the issue. They will come back.

I hope so.

Originally Posted by M3Tuner44

I had the same issue. My car was at about 50,000 miles and it would go into limp mode if I would wot it and stay in limp mode for a few minutes and eventually go back to normal. It threw and engine malfunction on my screen as well. I changed the plugs and never saw the issue again.

I don't think that's the problem. I started the car (cold start) and quickly took a sharp turn (exiting a parking structure) and my engine began to stall, I got a half engine light, a message warning me not to accelerate while in a corner, and a DSC malfunction. I've found people who experienced the exact same problem and everything that I've read suggests that it is a steering angle sensor, but again, it could be anything. I just want the codes to come back so I can get the car fixed. Driving in limp mode really sucks lol.

[WesleyC]

Update:

After setting the JB4 to map 0 for a couple weeks, I decided today to try map 1 to see what would happened. The boost came on strong (like it used to), but it is coming very late. Before, I could feel the boost build up from around 2k rpm, but now the car feels like there is no boost and as soon as I hit ~4k rpm it kicks in very quickly. The timing seems to be way off. Not sure what the problem is since the codes have yet to come back...

[marv85]

Hey Wes,

Can you please log? May be the log will shed some light on the issue.

And you're saying you've been driving in limp mode for a while but there is no code???

[WesleyC]

Originally Posted by marv85

Hey Wes,

Can you please log? May be the log will shed some light on the issue.

And you're saying you've been driving in limp mode for a while but there is no code???

When the problem first occurred, there were codes, I'm sure, but since I had enabled the auto code clearing, they were all erased right away and have yet to come back. The engine continued to operate in limp mode. It has been about a month and the problem seems to have somewhat fixed itself, but now the boost timing is off. Still no codes...

[marv85]

Originally Posted by Wes.

When the problem first occurred, there were codes, I'm sure, but since I had enabled the auto code clearing, they were all erased right away and have yet to come back. The engine continued to operate in limp mode. It has been about a month and the problem seems to have somewhat fixed itself, but now the boost timing is off. Still no codes...

I see. But when you turn the car off, and then start it, and if it is still in limp mode then it will throw codes back again. 100% sure about that.

I assume you switched auto clearing off right? (dumb question, but we all overlook things)... If you start the car, and it goes into limp mode (giving you half engine light) then it will throw a code.

I'm sorry if I'm still getting what you wrote the wrong way


If you don;t have limp anymore, then make sure autoclear is off. Log a run or two and let's take a look.

[WesleyC]

Yes, as soon as the problem occurred, I turned off the auto code clearing, but whatever codes may have come up were deleted.

Like I mentioned, I got a DSC malfunction, half engine light and the car tried to shut itself down (as I was driving, lol). Very strange problem... Since then, I have not gotten any more codes, but my car has continued (up until yesterday) to be in limp mode, or something like it. There has been no boost whatsoever. Like I said, now the boost is coming back, but the delivery is very late.

Originally Posted by marv85

I see. But when you turn the car off, and then start it, and if it is still in limp mode then it will throw codes back again. 100% sure about that.

I assume you switched auto clearing off right? (dumb question, but we all overlook things)... If you start the car, and it goes into limp mode (giving you half engine light) then it will throw a code.

I'm sorry if I'm still getting what you wrote the wrong way


If you don;t have limp anymore, then make sure autoclear is off. Log a run or two and let's take a look.

[marv85]

Originally Posted by Wes.

Yes, as soon as the problem occurred, I turned off the auto code clearing, but whatever codes may have come up were deleted.

Like I mentioned, I got a DSC malfunction, half engine light and the car tried to shut itself down (as I was driving, lol). Very strange problem... Since then, I have not gotten any more codes, but my car has continued (up until yesterday) to be in limp mode, or something like it. There has been no boost whatsoever. Like I said, now the boost is coming back, but the delivery is very late.

Do you have a BT tool? might be better for reading codes.

[WesleyC]

Originally Posted by marv85

Do you have a BT tool? might be better for reading codes.

No, I don't have a BT tool. The JB4 is the only way that I have read codes.

[Devas]

Originally Posted by techwhiz

The codes will come back if the problem persists. If you are throwing codes; then clear the codes without fixing the issue. They will come back.

If only we could just push a button and all our car problems will be fixed.

[Mproved]

What was issue???

[kirtsanhga]

I have a 2013 335i with 76K miles and was exiting from the freeway approaching a red light and all of the sudden I got an engine malfunction reduced speeds sign. I pulled over and restarted the car and everything was fine but had no power. I made it home going about 40 mph but the rpm would barley go higher and would shit at like 2k. The next day I was going to take it to a mechanic which is about 30 miles away and it drove fine on the freeway just no power still. He said there were no codes but the Valvetronic system and some sensor were not working properly. He said it may be because your air filter needed to be replaced that can be a part of the problem so we replaced that. He said if there is no power still bring it back so he can check it in depth. Well there is a little bit more power but still shifts super low but I don't feel the turbos kicking in at all!! I have 80k miles emissions warranty at bmw the mechanic said he is 90% sure they will cover it if you get it diagnosed there. He said he will do the full diagnostic too if the filter didn't fix the problem.

[Digitalism]

Get a new mechanic. Reduced power because "it may be because your air filter needed to be replaced..."

Hrmmm sounds like your mechanic has no idea.

[MysticRob]

Originally Posted by Mproved

What was issue???

Original issue was Mproved digging up an, at-the-time, already 4yr old DEAD thread.

Originally Posted by kirtsanhga

I have a 2013 335i with 76K miles and was exiting from the freeway approaching a red light and all of the sudden I got an engine malfunction reduced speeds sign. I pulled over and restarted the car and everything was fine but had no power. I made it home going about 40 mph but the rpm would barley go higher and would shit at like 2k. The next day I was going to take it to a mechanic which is about 30 miles away and it drove fine on the freeway just no power still. He said there were no codes but the Valvetronic system and some sensor were not working properly. He said it may be because your air filter needed to be replaced that can be a part of the problem so we replaced that. He said if there is no power still bring it back so he can check it in depth. Well there is a little bit more power but still shifts super low but I don't feel the turbos kicking in at all!! I have 80k miles emissions warranty at bmw the mechanic said he is 90% sure they will cover it if you get it diagnosed there. He said he will do the full diagnostic too if the filter didn't fix the problem.

Now the issue is a forum (possibly entire internet) newb digging up the same ancient DEAD thread but describing something that hasn't come close to helping anyone diagnose anything. Newb, take your car to a BMW specialist or get a code reader that will actually read BMW codes properly and go from there -- "a mechanic" sounds like he doesn't know what the hell he's talking about. If you believe your air filter is the cause then gawd help you cuz you're going to be raked over by everyone you take that car to. And maybe buy a Honda.

[kirtsanhga]

Originally Posted by MysticRob

Original issue was Mproved digging up an, at-the-time, already 4yr old DEAD thread.



Now the issue is a forum (possibly entire internet) newb digging up the same ancient DEAD thread but describing something that hasn't come close to helping anyone diagnose anything. Newb, take your car to a BMW specialist or get a code reader that will actually read BMW codes properly and go from there -- "a mechanic" sounds like he doesn't know what the hell he's talking about. If you believe your air filter is the cause then gawd help you cuz you're going to be raked over by everyone you take that car to. And maybe buy a Honda.

Look buddy, I know you are a BMW expert and all but I don't see you providing any useful info either. All I see is you replying to people in a DEAD thread with a bunch of bullllllshittt How about you go fix some shit on your 2009 335i M Sport Sedan with a 137k Miles that will prob take a shit any day.

[MysticRob]

Originally Posted by kirtsanhga

Look buddy, I know you are a BMW expert and all but I don't see you providing any useful info either. All I see is you replying to people in a DEAD thread with a bunch of bullllllshittt How about you go fix some shit on your 2009 335i M Sport Sedan with a 137k Miles that will prob take a shit any day.

LOL, I and Digitalism already offered useful advice which you must've missed while furiously typing away your reply.
If my ride does 'take a shit' soon I'll have the MHD app available ("a code reader that will actually read BMW codes properly") to read the codes and diagnose the issue.

What do you expect? Good luck with your ride.

[kirtsanhga]

Originally Posted by MysticRob

LOL, I and Digitalism already offered useful advice which you must've missed while furiously typing away your reply.
If my ride does 'take a shit' soon I'll have the MHD app available ("a code reader that will actually read BMW codes properly") to read the codes and diagnose the issue.

What do you expect? Good luck with your ride.

LOL I didn't type a long asss paragraph like someone but if you want an update: BMW could not find any codes or any problems with the car lol. They said they needed to do an extended drive but both my tires on the left side had no thread left so the traction light would turn on every time the tech drove it so it was considered unsafe to drive and couldn't continue the diagnostics lmao. I picked the car up and got both tires changed and the car felt fine! The power was there and it was running perfect lol