Loss of power.
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This is a discussion on Loss of power. within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hi guys pretty new this forum. I've got an 02 impreza bugeye with no mods. I've recently had a loss ...

  1. #1
    Registered User Mainerz91's Avatar
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    Loss of power.

    Hi guys pretty new this forum. I've got an 02 impreza bugeye with no mods. I've recently had a loss in power. My engine light came on and it's come up as a lambda problem could this be the reason for loss of power? I've also been told that I could have a minor boost leak but I'm not to sure how to search for it. Can anybody help? Cheers.


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    He simply abides. SD_GR's Avatar
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    Hello, welcome, please post the code itself (POxxx format). Also refer to this:
    HOW TO TEST A SUBARU by turboboostleaktesters.com
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    Pro Manscaper Mikie13's Avatar
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    It could be a multitude of different things...please post the code.
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    Registered User Mainerz91's Avatar
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    It P0546



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    Administrator TheJ's Avatar
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    Welcome to club!


    How "sure" are that it's never been modified?

    I ask because if you search the code you will see that it is for Exhaust Gas Temperature Sensor Circuit Malfunction (High Input). You'll also see that it is most commonly associated with the UP (up pipe) having been gutted or replaced with a catless one on the early USDM WRX. If your car has been modified in this way there is lots of info available in the search results for cost effective remedy.

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    Administrator TheJ's Avatar
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    Gutting or replacing the UP on those model years is probably one of the most common engine mods done.
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  8. #7
    Registered User Mainerz91's Avatar
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    Ohrite ok will defo have to look in to that. Thanks for the help 😁


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