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Sonic (Aveo) The subcompact known globally as the Aveo since 2002 is now the SONIC in North America as of the 2012 model

Chevrolet Sonic
GM Platform: T200, T250, T300

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Old 06-29-2011, 02:24 PM
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Join Date: Jun 2011
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Default CEL on, then off - codes U0100, U0073, and P0700

Twice in the last two weeks I've had my check engine light come on, and then go off again after a few driving cycles - the first time, right after I brought it into the shop, which sent me on my way with a "come in again if it comes on again" wave.

The codes it's throwing are U0100, U0073, and P0700. There are a few threads sprinkled around the internet for a similar code group for Silverados and Tahoes. The most frequent suggestion is that there's a burnt-out buss bar fuse, and the most frequent response is "the fuse is fine, dangit."

I'm not sure if a burnt fuse's the case here, since the light goes out.

But before I take it in for more serious service, has anyone else seen these codes in this grouping? What was your solution?

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Old 06-29-2011, 02:24 PM
 
 
 
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2010, aveo, cel, cheverolet, chevrolet, chevy, code, codes, engine, gm, p0700, repair, tahoe, u0073, u0100


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