P0172 System too rich bank 1--2000 Avalon XLS

[wcrouch]

Specs are as follows:
Fuel Sys 1: CL
Fuel Sys 2: CL
Calc Load (%): 28.24
ECT (degrees F): 185
STFT B1(%): -4.69

Car is not running too bad. A little rough at idle. What do you think?

[new echo owner]

What is the long and short term fuel trim for both banks? Should be about the same for both banks, otherwise, you may have an A/F sensor not working properly, sending the wrong signal to the ECM.

N.E.O.

[toyo_tech02]

Originally Posted by new echo owner

What is the long and short term fuel trim for both banks? Should be about the same for both banks, otherwise, you may have an A/F sensor not working properly, sending the wrong signal to the ECM.

N.E.O.

+1

[csaxon]

+2 and other stuff if you're still around. It's been about 8 months with no response.