Oxygen sensor heater circuit testing universally should work 4 wire and 3 wire if you see those

Oxygen sensor heater circuit testing universally should work 4 wire and 3 wire if you see those I have had very good luck just testing for an open circuit when getting a heater circuit code. find the 2 matching colored wires and check resistance. P0135, P0141 Like the Facebook page, find me here. https://www.facebook.com/fixingcarsandstuff/ This Channel provides videos for informational purposes only and cannot be held liable for injury, damage, problems that arise when trying to duplicate steps shown

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