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Thread: Z20LET MIL came on

  
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    TurboManiak's Avatar
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    Z20LET MIL came on (P0170)

    Hello people,
    Have a problem! MIL came on while I was driving ... checked it and it showed trouble code P0170 Fuel trim malfunction (bank 1). Anyone have an idea what's wrong? O2 sensor, AFM ? Help please...
    The only way to be 100% certain that work has been done properly is to do it yourself.

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    webbo gsi's Avatar
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    its one of the sensors in the exhaust but im not sure which is bank one?? someone will be along to confirm which it is im sure!!

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    TurboManiak's Avatar
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    Comeon ppl ... doesn't anyone have an idea how to check the sensors ... I don't want to buy both O2 and AFM if one of them is Ok...
    any help is appreciated...
    The only way to be 100% certain that work has been done properly is to do it yourself.

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    Spectic's Avatar
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    Sure bank one is the sensor just below turbo.

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    New info ... just checked the live data ... long term fuel trim showed +23 %. No wonder I have poor mpg . I've reset the ECU but I need advice what to buy? I've searched the forum and it seems that my problem is either AFM or O2 sensor. But how do I check which one is ******** my fuel trim
    The only way to be 100% certain that work has been done properly is to do it yourself.

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