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Re: P0641 VREF 1 low
Posted to Technical Theory Forum on 8/2/2018 6 Replies

Hi Timothy

Once you removed the FTP 5v reference the captures on the scope no longer showed that momentary ground. By eliminating the reference voltage on all those sensors didn't you also create codes for the sensors. I don't have a diagram to refer to,just... Login to read more.

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