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ok check engine light came on again. i already cleaned the MAF with electrical cleaner but still the same. cel comes on and error code is P0171 and P0174. i checked the air filter and its super dirty. could this have something to do with it?

hey im a newbie too. mines white. i wish they had the baby blue at that time. its my first lexus. now i know why people say its better than mercedes.

the CEL light came on along with the VSC and Trac off lights. this morning i removed the MAF sensor and cleaned it. replaced it, drove a bit and the CEL came on again. i decided to take it to the dealer since its still under warranty. the moment the i started the car to show it to the dealer, the CEL is gone. i dont know if im gona be happy or *BLEEP*ed. but i hope it does not come back. do you think the cleaning did it? mine is a 2004 RX330