Quote:
Originally Posted by Gelbster
P1126 That is usually = a lean condition on Bank 1 .The plug color may confirm. Usually a vacuum leak.
Make sure you used the correct part number O2 sensors .Easy to mistakenly use the wrong ones.Cross check the Porsche part code if you Interchanged to Bosch.
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I purchased the O2 sensors from Pelican and stayed with Bosch, figured they had it right.