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Re: Old School Test
Posted to Emissions Forum on 8/4/2019 8 Replies

This vehicle had no codes stored. MIL was off. Those BB’s would result in a P0401 or P0400. There is an EGR temperature sensor. When it doesn’t see an increase at cruise, it will code. I suspect this one was not far from setting the code. The temperature dropp... Login to read more.

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