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C4C5 question



What does a P1406 code mean. My scanner says Pintle circuit sensor fault. This is on a 97 Chevy 1500 Van with 5.7l. Van drives fine but SES light is intermitent. I assume this has something to do with the IAC but you are the GM guru. All help is appreciated.;help
Remove the EGR and clean it ans it's passages, it's and EGR performance code it's sticking.

David Fulcher

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