Have this check engine code. Came on after R/R of Lower Intake. My fans do work with the A/C. Reviewed wiring connections multiple times. I tend to think if the relay was bad the fan would not work at all.

Anyone know where to start diagnosis?

Problem solved. Decided to check the fuse (feel real stupid not checking this first). Fuse box above battery. 30 amp fuse blown for the fan 2.
Will replace and see if that clears the code.