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oxygen sensor

  1. SM (2001-2006) Santa Fe
    Hello, Can someone give me some help please. I have a Santa Fe 2.7 2002 and I've been getting code P1166. The car drives normally with no other symptoms. I stared monitoring Bank 1 O2 sensors and fuel trim with Torque Pro and noticed that before the P1166 error was thrown sensor 1 went hard...
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