can anyone recommend a low priced decent scanner and where to purchase? i need one to correctly diagnose codes P0171 P0174 bank 1 bank 2 syst too lean, P1150 AF sensor range perf bank 2 sensor 1. replaced MAF but CEL returned aft 2 days. need further assistance. thanx
New MAF didnt clear codes on 2001 Lexus RX300
by mjp1031 in Waukegan, IL on June 24, 2011
ANSWER by mastertech6371 on June 25, 2011
code pullers do nothing but give code numbers which never identify a bad part, just a failed system. a scan tool runs from 3000-5000 depending on accessories. let a shop check it for you and give you a bid. expierence is the best problem solver as we have been to schools for this and work at it every day. 171,174 is most likely a lean running condition from a vacuum leak or maf sensor. it needs to be verified by a tech. Roy
cleaning the MAF didnt fix. syst too lean bank 1 bank 2, af sensor range performance bank 2 sensor 1. if both banks fuel trim out of range, why is only bank 2 sensor 1 setting a code? is the issue ...