Dead X5

[Xman13]

Driving home from work and my 91 starts to sputter. Wont restart. Towed it home and pulled 3 codes. PO171, PO174, and PO313. Not sure what the 313 is. Says low fuel.
Can anyone help me out? Is it the fuel pump? Low fuel pressure? I think I can hear the pump kick on but not sure. Is this pump in tank or on frame rail? Possibly dirty filter? I know the others are lean bank.
Lots of questions I know. I will get a manual tomorrow but hoping someone can ease my mind tonight.

[tmv]

Exact same 3 codes here. You might learn a thing or two from it.
Mixture too lean, P0171, P0174, P0313

[upallnight]

Originally Posted by Xman13

Driving home from work and my 91 starts to sputter. Wont restart. Towed it home and pulled 3 codes. PO171, PO174, and PO313. Not sure what the 313 is. Says low fuel.
Can anyone help me out? Is it the fuel pump? Low fuel pressure? I think I can hear the pump kick on but not sure. Is this pump in tank or on frame rail? Possibly dirty filter? I know the others are lean bank.
Lots of questions I know. I will get a manual tomorrow but hoping someone can ease my mind tonight.

First two codes are for lean conditions in bank 1 and 2. Possible cause, intake boot is torn or you need to replace the DISA Valve.

[Xman13]

OK thanks guys. They never said what the 313 was from? I guess part of the intake boot problem.

Does anyone know off hand what the fuel rail pressure should be?

[Qsilver7]

Here's some info that gives some possible causes...found by googling "bmw obd ii code po313":

• P0313 BMW Misfire Detected With Low Fuel OBDII Engine Light Trouble Code | Engine-Codes.com
• OBDII Code P0313 BMW - Misfire Detected With Low Fuel | HelpForCars.net

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