P0546 caused by gas brand?
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This is a discussion on P0546 caused by gas brand? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I have been using Chevron since I bought my car in 2002, but my boss just gave me the company ...

  1. #1
    Registered User Prince Ali's Avatar
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    P0546 caused by gas brand?

    I have been using Chevron since I bought my car in 2002, but my boss just gave me the company Arco gas card to use. I have been using Arco for the past month and now my car is throwing the P0546 code. Is this a coincident or is Arco causing this problem? The EGT is fine according to my gauge.
    Thanks,
    Ali
    Thanks,
    Ali

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  3. #2
    Administrator Trainrex's Avatar
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    Do you have a gutted uppipe?

  4. #3
    Registered User Prince Ali's Avatar
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    Quote Originally Posted by Trainrex
    Do you have a gutted uppipe?
    I have an MRT catless up-pipe, but that was installed years ago.
    Thanks,
    Ali

  5. #4
    Registered User Prince Ali's Avatar
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    I don't think so. I have the VF34, sti injectors, MRT exhaust, up-pipe, and ecutek tuning. The tuning, vf34, and sti injectors were done last year. I don' t have the 2.2 resistor in place, but this is the first time I have gotten this code.
    Thanks,
    Ali

  6. #5
    Administrator Trainrex's Avatar
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    Quote Originally Posted by Prince Ali
    I don't think so. I have the VF34, sti injectors, MRT exhaust, up-pipe, and ecutek tuning. The tuning, vf34, and sti injectors were done last year. I don' t have the 2.2 resistor in place, but this is the first time I have gotten this code.
    I'm not sure if the Ecutek reflash supresses this code. Odds are you need to install the resistor.

  7. #6
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    Quote Originally Posted by Prince Ali
    The EGT is fine according to my gauge.
    Thanks,
    Ali
    thats an aftermarket EGT...the code is for the stock EGT....it has failed remove it, plug it & do the 2.2k ohm fix....problem solved...
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