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Old 09-06-2012, 09:14 PM   #3
iminhell's Avatar
Join Date: Jun 2006
Fan#: 36222
Location: Darwin, MN
What I Drive: 2000 & 2001 ZX3's

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If you can datalog, you should also be able to look up the P1127 (in LiveLink, Ctrl+T).

Odds are it's a wiring issue with the O2 heater (rear O2).

Your ECU is just fine.
It's a tune issue more than it'd be a bad ECU.
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.
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