My CEL came on last week and I confirmed it was P1131 (bank 1 - sensor 1 shows lean). We reset the code, and since then the CEL has cycleed on/off a couple of times (about 200 mi. on, 50 mi. off... I drove HOU-DAL-HOU last weekend). So, in my experience, the answer is "yes."
BTW, finally got a Bosch O2 sensor yesterday, and I hope to put it in today.
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Garrick
Silver E0, #3895 of 6535, built 10/2/97
She's stock. Why mess with a good thing?
