Thread: Code P1128
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Old 08-10-2005, 01:11 PM   #6
ddb
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Join Date: Sep 2004
Location: Charlotte, NC
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PorscheGirl,

I had a 1128 in my 2000 earlier this year. I had the CEL reset after adding a bottle of Techron gas additive. I didn't have any problems until I had another CEL recently. I was sure it was another 1128. Instead it was a 1117. I reset that one as well. Since I haven't found anything loose or disconnected in the engine compartment, I tend to think it's an O2 sensor. I'm planning on replacing all 4 O2 sensors very soon. Let us know how this turns out for you.

ddb
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