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BMW e90 N46B20 Engine: Resolving Check Engine Light & Codes P1100, P1101 - MAF & Lambda Probe

xCziken 34902 7
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  • #1 16415202
    xCziken
    Level 9  
    Hello

    I have a BMW e90 with 2.0 engine N46B20. Every now and then he throws me the check engine always with the same errors:
    - P1100
    - P1101

    The indicator likes to go out by itself, unless it clears the error itself, sometimes it will appear in 50km and sometimes I can drive 300 and nothing. The car generally flashes elegantly but I noticed that when checking, it seemed to get in the worse. I will add that the car is gassed.

    Now my question are these errors about what? According to what I read was a flow meter or lambda probe?
    Can I ask you for some help?
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  • #3 16776493
    ptaszek_bs
    Level 10  
    Hello, I have the same problem, did you manage? I have a STAG4 QBOX PLUS installation with automatic error reset connected to OBD and none of the AC technicians want to upload the software to delete P1100 and P1101 errors.
    HELP
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  • #4 16776680
    cobraa
    Level 27  
    Both errors are gentlemen flow meter
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  • #5 16776687
    ptaszek_bs
    Level 10  
    But what a flow for gasoline exchange is ok
  • #6 16776693
    cobraa
    Level 27  
    Not necessarily. Have you rode gasoline with 500km? how do you know it's ok?
  • #7 16776709
    ptaszek_bs
    Level 10  
    yes, 300km rode on gasoline and did not enlighten and on LPG after 100km 120 on 100% enlighten
  • #8 16782878
    cobraa
    Level 27  
    Well, let gas workers tire the problem if you are sure that on gas is ok, that is, originally you have their plot right now.

Topic summary

The discussion revolves around a BMW e90 equipped with the N46B20 engine, which frequently triggers the check engine light with error codes P1100 and P1101. Users speculate that these codes are related to the mass air flow (MAF) sensor or lambda probe issues. One user mentions having a STAG4 QBOX PLUS installation for LPG, which automatically resets errors but does not resolve the P1100 and P1101 codes. Another user confirms that both error codes are indicative of flow meter problems, while others discuss the performance of the vehicle on gasoline versus LPG, noting that the check engine light does not illuminate when running on gasoline for extended distances. The conversation highlights the challenges in diagnosing and resolving these error codes, particularly in relation to fuel type and the functionality of the gas system.
Summary generated by the language model.
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