Check engine light

[Shaneson]

How do I bypass an oil pressure sensor in a 2006 GMC Yukon 5.3L using transistors?

[Jsdirt]

You would need something to feed a low voltage signal to the signal return wire.

 

I can't remember offhand what voltage between 0 and 5V corresponds to higher pressure - you'd want it somewhat closer to the lower end, but not too low as that will throw a code.

 

Easy way to check is watch the scan tool before and after you unplug the sensor. Unplugging it is the same as feeding it 5V.

Edited May 5, 2025 by Jsdirt