1998 528i check engine light p0173
P0173 Fuel trim 2 on my 98 528i, searched around on the internet couldn't find any cases with just one code showing.
its the only code that show on the CEL, i tried to reset the code it came back after 10 mins of driving.
Engine runs fine, no hard starts rough idle. passed Ontario e-test with the light on.
anyone know anything about this? i've read a couple of articles about this but everyone had rough idle and vacum leaks, followed by other codes. Im just getting the one p0173 fuel trim bank 2