No boost
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This is a discussion on No boost within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I'm a newbie to this 4 cyl turbo world so I'll try to explain in as much detail as possible! ...

  1. #1
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    No boost

    I'm a newbie to this 4 cyl turbo world so I'll try to explain in as much detail as possible! The other day I was driving along about 60 and I hear a click the cel comes on and the boost drops to -1 to 0! Ever since then the car will not boost over 0 and it accelerates like a non turbo car! The cel will come on and stay on for a while then just Go off! I took it to autozone when it was on and they said it wouldn't read the code and it might be a dealer specific code! The turbo still spins so I know it's not a blown turbo! The car is completely stock 04 wrx non sti! Any help would be greatly appreciated!

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    Registered User teflon_jones's Avatar
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    There are no "dealer-specific codes." Codes are standard across the industry to the OBDII standard today. Doesn't matter on manufacturer or model, they're all the same, and all available via any OBDII reader.

    If there's a CEL, there must be a code. Maybe the "expert" checking it at the autoparts store just didn't know what they're doing. Was the CEL on at the time?

    I'd look at the piping for the system since it's stock. Sounds like you might have a leak somewhere.
    Scott
    Past Subies - '11 STI Limited stage 1+ and '04 STi stage 2+
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  4. #3
    Moderator Donkey's Avatar
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    What octane gasoline are you using? The ECU does have the ability to limit boost if it detects something bad. As Anubus said, most newer OBDII scanners will read the codes. My cheap arse Actron has no trouble reading codes from my car and other year Subies. They are pretty cheap now a days and are a pretty usefull tool to have and will save you $$$.
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  5. #4
    Registered User jd92677's Avatar
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    Quote Originally Posted by teflon_jones View Post
    There are no "dealer-specific codes." Codes are standard across the industry to the OBDII standard today. Doesn't matter on manufacturer or model, they're all the same, and all available via any OBDII reader.
    There absolutely are manufacturer specific codes, and not all code readers will read all codes. It very well could be a code that the autozone code reader cant read. OP, you may have to take it to subaru to have them read the CEL

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