u/AnneGrann

Image 1 — Check Engine light comes and goes and shows two codes.
Image 2 — Check Engine light comes and goes and shows two codes.
▲ 4 r/WRXSTi

Check Engine light comes and goes and shows two codes.

I took my 2015 Subaru WRX STI to Autozone to find out why the check engine light was on. It showed two codes P2443 AIR System Switching Valve Stuck Closed Bank 2 and C1413 Power Supply Voltage Failure. The light comes on and lasts for about 15/20 miles and then turns off by itself, then after another 15/20 miles it’s on again. What could be the reason for this?
I use it daily and it has 78,908 miles, no mods. In January I replaced the clutch and flywheel to an Exedy stage 1, and there’s no major work just regular maintenance.

u/AnneGrann — 8 days ago