DIY : changing the Oxygen / O2 sensor on Yaris hatch MANY PICS - Toyota Yaris Forums

10-06-2016, 03:39 PM

#29

Cigar_Maverick

Drives: 2007 Yaris Hatchback

Join Date: Mar 2016

Location: Iowa

Posts: 46

Quote:

Originally Posted by 07liftback

Anywho, does anyone know if it's absolutely necessary to reset the ecu by unplugging the battery or will the car relearn the readings from the new oxygen sensor? I will continue without resetting the ECU to see when my MPG will finally improve.

Honestly, I'm trying to remember if I unhooked the battery or, more likely, went to the local parts store and had them clear the errors. Almost certain I just had the codes cleared. No errors since.

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