Hello all,

I just recently cleared my P0138 code, which seemed to be my o2 sensor.

I reset the ecu, and my check engine light came back on after 40 miles.

I went to autozone thinking it was the same P0138 code, but instead I got a P0505 code.


P0505 meaning:

1. Vacuum leak
2. Dirty throttle body
3. iac motor defective
4. poor electrical connection to the IAC valve




What should I do? My car started to idle funny while I was out, but seems that the idle went away.

Should I reset the ecu and see if it comes back (one of those one time only codes?)

ALSO, I pressure washed my engine bay yesterday, but I bagged off most of the stuff.

 

P050 is "idle speed higher than expected". Like you said, probably a vacuum leak or your IAC. Doubt it's the TB.

 

Im going to check vacuum leaks tomorrow in the day, could I need to clean my IACV

 

light hasnt come back on yet, but my cars idle is fluctuating from liek 1000rpm to 1600rpm.

I cleaned my iacv, what should I do now?

I don't see any vacuum hoses disconnected..

 

Check again

 

I cleaned my IACV, installed it back properly and I think I bled it properly.

Car is idling fine now, no fluctuation at all.

I prob just got the connector wet when I washed my engine bay.


Could this just be the fix? I will drive my car more tonight and just make sure, but so far so good.

 

Probably

 

Code disappeared, hasn't come back. I must of just got my IACV wet.

Thanks again.


/thread