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Old 05-05-2018, 10:42 AM   #1
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CA Smog - throw P1128 code?

I took my '01 Boxster for its 2-year CA smog certification. It passed without any issue. But shortly after - next day - the car threw a p1128 code. Not sure if they are related but, I find it too coincidental that the car has never thrown a code, has a newer AOS, and suddenly p1128 pops after a smog cert.

Now I'm trying to chase down how to fix the code.
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2001 Boxster, #414: PCA-GGR AX12; PCA Zone 7 P14
2014 Cayman S
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Old 05-05-2018, 11:11 AM   #2
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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
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Old 05-06-2018, 11:04 AM   #3
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I had 1126 and 1128. Turned out to be a lose hose.
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