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International Automotive Technicians Network
Re: Engine temperature too low for closed loop
Posted to Technical Discussion Forum on 2/6/2020

There was a TSB on some year Toyota for this same thing. Basically....they did it wrong....LOL

It was once explained to me, that their (faulty) logic at the time, was that if the AFRS wasn't switching soon enough, the engine must not be warming-up, instead o... Login to read more.