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So I recently had a P1128 and P1130 codes (O2 sensors left and right). I would clear them and they returned every 100 miles or so. I bought a $15 code reader from Amazon just to read and clear the codes
I followed the instructions on this site, bought some $11 MAF cleaner from Amazon, removed theMass Airflow Sensor (MAF) and gave it a good clean with the MAF cleaner spray in the right areas for a couple of minutes. I then got a P1128 code with a P1130 pending.
I swapped the loose fitting dirty OEM air filter for a new Porsche one which proved a firm sealed fit in the air filter tray and sprayed the MAF sensor again with the cleaner and after 800 miles the CEL light has stayed off. My engine has done 77k miles and they are probably the same O2 sensors since new.
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