This topic contains 1 reply, has 2 voices, and was last updated by Alex Mckenzie 1 year, 6 months ago.
Have a 09 Silverado. Has a code p2271 o2 bank 1 sensor 2 stuck rich. Satrted with the wiring and command. All is good there changed the 02. Still comes back. So I did a injector balance test found 1 leaking injector. Replaced it still comes back.what would be the next step to solving this.
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