2006 Toyota Tacoma had an engine put in it and then it started setting codes for lean exhaust, and after replacement of the O2's and air/fuel sensors it finally settled into setting P0138, and P0158. One is B1S2 voltage high and B2S2 voltage low. Bank #1 downstream sensor voltage was going to .1v or lower and staying there, while the bank #2 downstream sensor would go to .8 and stay there. Bank 1 A/F sensor voltage was 3.1v, indicating rich,. and bank #2 A/F sensor 3.45 volts indicating lean.
Now before I say what was wrong, see if you can figure it out or what could you do try and prove what was wrong with the truck.
FWIW fuel trims were adding fuel to bank #2, and taking fuel away from bank #1
Now before I say what was wrong, see if you can figure it out or what could you do try and prove what was wrong with the truck.
FWIW fuel trims were adding fuel to bank #2, and taking fuel away from bank #1
Think this through before reading the answer below.
No comments:
Post a Comment