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- - What do I need to do? (https://oldsmobileforum.com/forum/general-tech-help-12/what-do-i-need-do-2720/)

guddee74

Apr 7, 2009 08:59 AM

What do I need to do?

Check engine light came on....hooked up to diagnosis and it says o2 sensor heater circuit malfunction (bank 1 sensor 3). Anyone know how hard this is to knock out?

rustyballs_69

Apr 7, 2009 08:05 PM

What kind of car is it?

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