P1129 Chrysler -

Question

what is needed to fix the problem. Can I do it myself?

Answer 1

P1129 Closed loop fuel not achieved Bank 2

What need t done to resolve P1129 is to inspect for possible causes for this code. This can just be the 02 sensor on Bank 2, it can also be set due to a mechanical condition, when P1129 is set most of all time there is another code that is present that causes a P1129 to set with it, If this is the only code clear the code and retest. If P1129 is set by itself you are more than likely have a failing 02 sensor on Bank 2