legacybbs Posted November 19, 2013 Share Posted November 19, 2013 Help, my 1st gen subaru legacy gt has check engine code 42. It comes on when car comes to idle and it idles quite rough. Although if i turn the car off, and on again it goes bcak to normal idle and code dissapears. Link to comment Share on other sites More sharing options...
monkeyposeur Posted November 20, 2013 Share Posted November 20, 2013 It's part of your TPS. Here is a pdf I got from Legacy777 that shows how to test it. Link to comment Share on other sites More sharing options...
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