This 2010 Chevy Impala has a very intermittent glitch that puts the PCM into REDUCED POWER mode. Quite annoying.
Each time it throws a P0641 - 5V Reference #1 Circuit code.
Several shops tried to figure it out, but no luck.
Let's use scan data and the PicoScope to see if we can catch the glitch in the act, and then find the root cause.
THINK TOOL PROS:
www.amazon.com/dp/B08XXWHQVJ?...
Enjoy!
Ivan
14 мар 2022