Long story short
OBD Code P0171 & Monitor Icon C
Celica GTS 2000 94000 miles
Mods: Injen CAI
CEL came on a few months ago. My car was running like crap. I noticed I was getting less miles to the tank etc. Took in to the dealer said it was my ECU and injectors according to the TSB. They checked my MAFs and said it was fine. Bought new injectors and ECU car runs much better but damn light came back on
Took it back in today they checked it for free and they said my o2 sensor was falling out quick to 0 volts. They blamed my air/fuel ratio gauge saying because it is trying to work its screwing with my o2 sensor. Told me they could not do anything till I remove the gauge and bring it back to check if the o2 sensor is bad!
I think that is bs but I dont know what to do to get ride of the CEL and get the miles I use to get to the tank.
I have done/bought new:
NEW Spark Plugs
Should I buy a new o2 sensor?
Should I get rid of my air/fuel ratio gauge?
Which o2 sensor should I get front back?
I have the INNOVIA 3100 Digital OBDII Code Reader which tells me two things when I hook it up. P0171(running lean bank 1) and the letter C blinks on the screen which stands for Catalyst Monitor.
Any help suggestions or love would be welcomed! Its been a long day dealing with those jerks at the dealer