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2010 2011 BMW 5 Series Forum F10 Help me out... Limp mode, P325F |
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09-14-2019, 11:16 PM | #1 |
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Help me out... Limp mode, P325F
Cycling the car on and off works, but it's happened twice in the last two days... cruzing down the freeway, step on it in a 5th or 6th, not even high RPMs and fuel cuts off kinda hard-like, and i'm in limp mode. I found this since it's not a generic OBDII code, but a manufacturer specific code:
"Plausibility monitoring of the relative fuel mass" Which I think means I lost fuel pressure? Not sure... but I did read several guys with tunes disable all of these "Plausibility" codes that will take your car into limp mode. Thoughts anyone? I'm currently running a 02 simulator due to catless DP to not throw a CEL. So I've manually set my 02 output back to the ECU as rich as I can get it without throwing a CEL as well. I was thinking to just go get JB4 to be able to control more parameters and monitor things a bit better, like fuel. |
09-15-2019, 02:34 PM | #3 |
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LPFP or HPFP? Any easy diagnosis or just take it into a shop and have them check it out? Would this not be caused by my mods and the fact I don't have a tune?
Wagner FMIC knockoff AFE Scorcher chip BMS Intake Catless DP Full exhaust O2 sensor simulator (set signal being sent to ECU for fuel) |
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09-15-2019, 07:33 PM | #4 |
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There's a recall for the lpfp so that's a free fix at your dealer. Tell them replace it and don't flash my car.
Unlikely to be fuel rail sensor but you never know and HPFP fuel failure is another code. Other forms mention this error and relate it to poor comms to the ecu caused by low voltage. Check your battery voltage.
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09-16-2019, 11:44 AM | #6 |
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It's not a tune that works with the ECU in unison with my other mods that would prevent codes, that's more of what I meant. I read a lot about how jb4 works WITH MHD and that's why I was leaning towards doing both starting with the jb4... thoughts?
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05-24-2021, 12:33 AM | #7 | |
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05-24-2021, 06:48 AM | #8 | ||
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05-24-2021, 09:22 AM | #9 | |||
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05-24-2021, 02:06 PM | #10 | ||||
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05-25-2021, 12:51 PM | #11 | |||||
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05-25-2021, 11:21 PM | #12 |
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Well, mhd is cheaper than a new dime! And if you are gonna mod anyway, worth a try.
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