went to wash the toxic crap off my car at the car wash and got a check engine light, codes were 13,35,42 and 44. this is the second time this happened after going through the wash.
doesn't happen when it rains, though I'm sure the water has something to do with it. anybody have anything similar happen to them and maybe a fix?

oops thought I was in tech discussions, I'll repost

[This message has been edited by yellow peril (edited 02-01-2018).]

The one time I went to an auto car wash my check engine light went on but went off before I could check the codes. I don’t know why, but it’s happened to me too.

Terminal connections/plug-receptacle on the eng compartment wiring harness no longer water resistant would be my guess.

Yes. Rain falls down, car wash comes from every direction under pressure so its not unusual the wash causes codes and rain dont.

Those blowers at the end set off the light on my 02 Silverado every time. Random cyl misfire. Guess the knock sensors don't like all that air blowing on the sides of the engine block -or- it's causing weird turbulence through the intake?

Brian

quote Originally posted by copperhens: The one time I went to an auto car wash my check engine light went on but went off before I could check the codes. I don’t know why, but it’s happened to me too.

Codes are usually kept in the computer even if the light goes off. Check anyway....