2017 Chevy Sonic 1.8. I have an extremely hard time to run any monitors on this expect egr. Within 2 weeks i have been able to do evap bay test once after replacing coolant temp sensor. I was able to run everyrhing but o2 and fuel. I shut it off for 30 mins and all the monitors went to not ready? Replaced ecm aswell and no change.Any help is appreciated!
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So, every time you shut the vehicle down the monitors go to not ready? -
Thats correctComment
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Ok, so monitors "should" only go to not ready if code clear is performed with a scanner or the battery is disconnected. However I have seen codes cleared before if the scanner was disconnected while it was preforming a function. First thing I would check is powers and grounds. There has to be a "keep alive" power which will stay hot with the key off, make sure to check that.Comment
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