Thread: CA Smog - throw P1128 code?
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Old 05-05-2018, 11:11 AM   #2
dsallean
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Join Date: Aug 2015
Location: Fulshear, TX
Posts: 266
I had the same code thrown occasionally after replacing my AOS. Just the P1128, no others. Turned out it was the hose from the AOS to the throttle body. Hose wasn't seated well.

Dave in TX
2001S
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