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Reset OBDII codes

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And the P0400 is the EGR malfunctioning.


It's probably filled with soot (or the pipe leading to it is).


Way to common problem. One of those "features" that we really don't want. But at least it isn't causing any technical problems - it's just an emissions issue.

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Yea, I figured out the issue - the backpressure transducer (or vacuum modulator, depending on where you look) is bad (doesn't hold a vacuum on the bottom port). The new part is on the way, but since the CEL isn't coming on anymore, i'd like to clear the codes - the scanguage's clear doesn't seem to be working that well - the code just comes back up after I do a code scan again. Gotta pass smog by the 20th. :(
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