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BMW 3-Series (E90 E92) Forum
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07 335i JB4 Cold Start Rough
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| 10-01-2023, 08:55 PM | #1 |
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07 335i JB4 Cold Start Rough
2007 335i JB4 downpipes, hobb switch, upgraded lpfp
No long cranks to start. Cold starts engine idles rough and goes in limp mode and occasionally the cooling fan will go full blast. Restarting will clear the limp mode and settle the idle. WOT it sputters and goes into limp mode. Codes: 2b2c (fuel high pressure, plausibility, cold start) 29f2 (Fuel high pressure system, fuel pressure) 29dc (cylinder injection switch off under WOT) New plugs and verified injectors are not leaking. If someone has experienced this what was the fix? Would completing a JB4 log help diagnose? I'm thinking HPFP but the previous owner stated he had it "replaced" |
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