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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > 08 335i N54 code p302c, limp mode



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      02-22-2015, 08:42 PM   #1
ladolcettad
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08 335i N54 code p302c, limp mode

So here's what's going on
I just picked up a 2008 335i bone stock from an older lady, 6 speed manual.
I picked up the JB4 & AFE pro 5 r intakes, a few days ago I had Auto couture in NJ install the JB4 G5, right after they put it in I take the car out, hit boost & it starts misfiring so immediately I turned around and went back there, they changed the spark plugs & it fixed it. Now, I'm driving the car and when I do a low rpm 6th gear pull from 60-120ish engine malfunction comes up on the dash & the car goes into limp mode, I restart the car & it's normal again. Issue only happens in higher gears, when your in boost for a bit. I scanned it and got code p302c, does this mean it needs a HPFP? It also idles a bit rough when it's cold, almost feels like its misfiring. I got all service records for the car and the HPFP was done 2 times by BMW & it also had a leaky injector that was replaced. Car has 94k. Also was told something about carbon cleaning. Please help it's driving me crazy!
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      10-12-2015, 10:12 PM   #2
rol
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Quote:
Originally Posted by ladolcettad View Post
So here's what's going on
I just picked up a 2008 335i bone stock from an older lady, 6 speed manual.
I picked up the JB4 & AFE pro 5 r intakes, a few days ago I had Auto couture in NJ install the JB4 G5, right after they put it in I take the car out, hit boost & it starts misfiring so immediately I turned around and went back there, they changed the spark plugs & it fixed it. Now, I'm driving the car and when I do a low rpm 6th gear pull from 60-120ish engine malfunction comes up on the dash & the car goes into limp mode, I restart the car & it's normal again. Issue only happens in higher gears, when your in boost for a bit. I scanned it and got code p302c, does this mean it needs a HPFP? It also idles a bit rough when it's cold, almost feels like its misfiring. I got all service records for the car and the HPFP was done 2 times by BMW & it also had a leaky injector that was replaced. Car has 94k. Also was told something about carbon cleaning. Please help it's driving me crazy!
Did you find a solution for this? Mine also has rough idle especially when cold, and yesterday suddenly I got P302C, wasn't even flooring it, just driving in a parking lot. Restarted and the issue went away and never came back since, not even when flooring. Btw the HPFP has 10y/120k warranty, so it that's the issue, the fix is free.
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      10-13-2015, 03:21 AM   #3
BashShah
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You need to search...... And read all the stickies in this section
At least read the head lines.
I am not tunes, but I did read first time tuners.

http://www.e90post.com/forums/forumdisplay.php?f=58

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