Replaced engine with re built. Also replaced thermostat, radiator, and bank 2 upstream O2 sensor?
Hi there,
This code indicates an issue with the closed loop system on bank 2. Here is a list of possible causes.
P1129 CHRYSLER - Closed Loop Fueling Not Achieved Bank 2 Read more: https://www.autocodes.com/p1129_chrysler.html
33.7k questions
32.5k answers
1.3k comments
23.0k users