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General E46 Forum
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Old 04-08-2014, 08:26 PM   #1
Derick_roy08
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5 Codes NEED HELP PLEASE

So i went to local mech and asked them to pull the codes on my car cause out of the blue the cars idle just went crazy and started jumping up and down and car started shaking as well. I was on my way to work and it happened minutes after filling up the tank. I have a 2k 323iT with 130Kmiles on it.

Codes read as follows:

P1478 which i know now is a lose gas cap.
P0173 (may need to do a smoke test)
P1525 Im a little lost on this, i read that its mostly not attaching the solenoid harness correctly but I checked and it's seated firmly

P0306 which i am gonna change the coil when it arrives.
P0340 says intake CPS but thats been replaced as well as the exhaust side id say 500miles ago. Any reason why its throwing codes?

Thanks in advance for all your help guys!
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Old 04-08-2014, 08:36 PM   #2
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Im sure the guys here will have the information you need... but keep in mind most codes will have several POSSIBLE problems.. so one code does not equal one fix.. could be 15 different problems... you can replace every single component and the problem could have been just a faulty wire or bad connection.. . I would go down the list of codes and do very good detailed visual inspection of components related to that sensor.
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Old 04-08-2014, 08:39 PM   #3
Derick_roy08
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Thats true i also read that some of the codes related to the CPS could be masked by a faulty vanos that needs fixing.


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Old 04-08-2014, 10:11 PM   #4
jdstrickland
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Quote:
Originally Posted by Derick_roy08 View Post
So i went to local mech and asked them to pull the codes on my car cause out of the blue the cars idle just went crazy and started jumping up and down and car started shaking as well. I was on my way to work and it happened minutes after filling up the tank. I have a 2k 323iT with 130Kmiles on it.

Codes read as follows:

P1478 which i know now is a lose gas cap.
P0173 (may need to do a smoke test)
P1525 Im a little lost on this, i read that its mostly not attaching the solenoid harness correctly but I checked and it's seated firmly

P0306 which i am gonna change the coil when it arrives.
P0340 says intake CPS but thats been replaced as well as the exhaust side id say 500miles ago. Any reason why its throwing codes?

Thanks in advance for all your help guys!


P0173 means rich, I would not look for a vacuum leak as the source of a rich condition. The smoke test is used to find an intake leak, but an intake leak would cause a lean condition, not a rich one.
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Old 04-08-2014, 10:17 PM   #5
Derick_roy08
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Cool, however you didnt suggest what should be done.


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Old 04-08-2014, 10:30 PM   #6
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Disconnect your Maf sensor and tell me if it solves hour problem. Also if not, one of the intake tunes after the Maf sensor has a rip in it
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Old 04-08-2014, 10:32 PM   #7
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The cps sensor that was used, was it a genuine one or aftermarket. If aftermarket sorry to burst your bubble but fork over another 120 for the real deal
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Old 04-08-2014, 10:37 PM   #8
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And another thing, we're your codes cleared after cps replacement? If you had the other codes already then I can see why there wasn't any point to. What you need is to get your own scanner. Very cheap very plentiful. Heck, get a bluetooth one if you have an android phone and use that as the scanner reader. A must have, if you plan on doing a lot of work yourself. Small price to pay. I'd recommend if you like changing settings as well, get the BMW PA soft one. Just get the replica counterfeit ones from the Chinese. They're good at producing counterfeits that work just as good
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Old 04-09-2014, 05:13 AM   #9
Derick_roy08
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Originally Posted by NumbaOneNewb View Post
Disconnect your Maf sensor and tell me if it solves hour problem. Also if not, one of the intake tunes after the Maf sensor has a rip in it

Solves the problem how, you mean the jumping idle? I did and it was the same...


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Old 04-09-2014, 05:15 AM   #10
Derick_roy08
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Originally Posted by NumbaOneNewb View Post
The cps sensor that was used, was it a genuine one or aftermarket. If aftermarket sorry to burst your bubble but fork over another 120 for the real deal

Its both bmw CPS. Ive read alot about aftermarket ones failing so i decided to get genuine ones.


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Old 04-09-2014, 05:18 AM   #11
Derick_roy08
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5 Codes NEED HELP PLEASE

Quote:
Originally Posted by NumbaOneNewb View Post
And another thing, we're your codes cleared after cps replacement? If you had the other codes already then I can see why there wasn't any point to. What you need is to get your own scanner. Very cheap very plentiful. Heck, get a bluetooth one if you have an android phone and use that as the scanner reader. A must have, if you plan on doing a lot of work yourself. Small price to pay. I'd recommend if you like changing settings as well, get the BMW PA soft one. Just get the replica counterfeit ones from the Chinese. They're good at producing counterfeits that work just as good

It cleared the codes but when it started the rough idle and i had the codes pulled it showed up again. Im ordering a PA soft, but i heard it takes for effin ever to get to you. Lol



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Old 04-09-2014, 04:27 PM   #12
Derick_roy08
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Update: ordered genuine coils, replacing all of em to get that squared away. Doing VANOS seals, DISA, and replacing the boots.

Sigh. Kill me now.


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Old 04-09-2014, 08:49 PM   #13
David McMahon
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Originally Posted by Derick_roy08 View Post
Update: ordered genuine coils, replacing all of em to get that squared away. Doing VANOS seals, DISA, and replacing the boots.

Sigh. Kill me now.


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Keep old ones!
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Old 04-09-2014, 08:52 PM   #14
Derick_roy08
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Keep old ones!

Well basically everything that i replaced in the car is sitting in my garage which my wife is upset about lol... Broken PCV, old CPS, old cooling system etc...


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Old 04-09-2014, 08:54 PM   #15
David McMahon
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Well basically everything that i replaced in the car is sitting in my garage which my wife is upset about lol... Broken PCV, old CPS, old cooling system etc...


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I meant the old coils, how much did they "run you" (cost!)
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Old 04-09-2014, 08:56 PM   #16
Derick_roy08
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Originally Posted by David McMahon View Post
I meant the old coils, how much did they "run you" (cost!)

I think its $570 for all 6. Dont tell my wife...


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Old 04-09-2014, 08:59 PM   #17
David McMahon
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Originally Posted by Derick_roy08 View Post
I think its $570 for all 6. Dont tell my wife...


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Have you seen the threads on getting parts cheaper?

Can also type the P/N into google/ebay/amazon etc
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Old 04-09-2014, 09:09 PM   #18
Derick_roy08
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I get all or most of my parts from FCPEuro.


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Old 04-15-2014, 08:14 PM   #19
Derick_roy08
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Sigh... Replaced all the stuff mentioned above and car is still shaking... Ideas guys?

Thanks!


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Old 04-15-2014, 08:21 PM   #20
lszlszx
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Post freeze frame data for P0173.
You need to do electrical troubleshooting for the CPS code.

https://www.youtube.com/watch?featur...&v=jUZAiHpuF0s
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