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EGR input voltage low
Hello,
1999 Grand Prix SE 3.1 litre engine 162000 miles
Throws code P0401 low EGR flow.
I read on another thread that the voltage on the first terminal on the connector should be 12 volts, I am registering 2.5 volts on that terminal and 5 volts on the second. The remaining terminals show no voltage.
I have already removed the EGR valve and cleaned it with carb cleaner ( it was not bad at all ) , and there is sufficient vacuum and no blockages in the EGR tube.
Any thoughts as to whether this could be a PCM problem or if it is the EGR valve itself? Your time is appreciated.
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