Question about 2001 BMW 325

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I have 2001 325xi The car did not start

The fault codes are P0313, P0174, P0171.
P0313 Pending. Where do I start the trouble shoot

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  • yadayada
    yadayada May 11, 2010

    U need a scan tool with the ability to monitor O2 output that is where u start.



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Thanks for the reply. Yes I do have scan tool with the ability to monitor O2 output.

Posted on Dec 17, 2008


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When reading codes from your vehicle the fault code reader may show them as pending codes or normal Diagnostic Trouble Codes (DTC).
Pending codes (also known as continuous monitor codes) will be registered when an intermittent fault occurs. If that fault does not happen again after x number of start/stop cycles, the ECU will erase the code from memory. If the fault is persistent it becomes a DTC.
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If the codes read include a DTC then you need to investigate further. This you can either do yourself or advise your garage. If, again, you don't see an apparent problem (depending n the severity of the code) with the vehicle you can note the codes down and erase them. Then check again after a week or a few days depending on how often the vehicle gets used. If a repair has been made (previous owner) the DTC may just not have been reset after the repair.
The other numbers behind the code 01/06 , 02/06, 03/06 , 05/06 ,04/06 These don't mean anything . cheap code reader .
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