p1129 code for 2006 dodge dakota

Question

replaced all 4 o2 sensors and the catalytic converters then throws code P1129 and P0300 trying to figure out why

Answer 1

Hi there,

The code P1129 means there's an issue with the closed loop system on bank 2. Here is some info for this code.

P1129 DODGE - Closed Loop Fueling Not Achieved Bank 2

Read more: https://www.autocodes.com/p1129_dodge.html

The code P0300 means there are misfires on random cylinders. Here is a list of possible causes.

P0300 DODGE - Cylinder Misfire Fault Detected Random Cylinders

Read more: https://www.autocodes.com/p0300_dodge.html