what the hell does this mean?should i just replace the injector?i cannot find anything on this code......cheers, brian

I just read that you were having some trim malfunctions... wanted to stop by and wish you the best of luck...

 

so. good luck with that.

 

once again:

 

trim malfunction.

 

thank you

What's the code?

 

And what year/ engine

1995 2.2 in a 97 outback after taking that horrid motor out of there......

and it is a p0170.

fuel trim malfunction bank 1

 

cheers, brian

A P0170 code indicates that the ECU ''thinks'' that it can't compensate enough to obtain a proper A/F ratio, as determined by O2 sensor data. That could be caused by any of a number of things. Leaks in the exhaust system before or immediately after the front O2 sensor is one possibility. Another is intake vacuum leaks (bad gaskets, cracks, damaged or misconnected hoses). Improper fuel pressure regulation (FPR itself, or vacuum to it) can cause this, as can air flow sensing problems (dirty or bad MAF or MAP, depending on what you've got). Wrong engine coolant temp sensor data is another possibility.

Edited November 24, 200916 yr by OB99W