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Re: unrun monitors
Posted to Technical Theory Forum on 5/19/2023 2 Replies

You need to look at the fuel tank pressure sensor pid. I can't remember what the voltage spec. is with no pressure, but I do know that an open circuit fault will set when the PCM sees 5 volts. These sensors are known to fail and report voltages between 4 and 5... Login to read more.

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