Check engine light on 2003 VW Golf GTI
re: Check engine light came on last night
I have a 2003 VW Golf GTI 20th anniversary edition. Yesterday, while the engine was idling it was not idling smoothly and it seemed the idles dipped a bit before going up again. This happened a few times. Now the check engine light is on. The car was parked outside on the dealer's lot while it was in for repair. Could this be from condensation in the fuel line or moisture getting into the fuel system? The exhaust smells a bit. It was at a half tank so I filled it up last night and drove on the highway for 10 mins. It seemed to run okay. Today it started up fine and I drove it around the block without any weird idling issues. Any ideas what this could be from?