2004 JEEP GRAND CHEROKEE O2 SENSOR WIRING
Jeep Grand Cherokee 1999-2004: How to Replace Oxygen Sensor
Oct 13, 2015Jeep Grand Cherokee 1999-2004: How to Replace Oxygen Sensor. A bad oxygen sensor can make your Jeep run rough and exhibit a number of unpleasant symptoms. Thankfully, replacing it is relatively easy and inexpensive.
O2 sensor on a 2004 Grand Cherokee - Fixya
Jun 05, 2012SOURCE: 2006 Jeep Grand Cherokee 5 engine, Hemi, sensor code P1129 The OBD is not that simple. All it is saying is that it does not like the air/fuel mixture. That can be from fouled spark plugs, an open gas cap or other intake leak, a bad O2 sensor, PVC foam on the air mass sensor, throttle position sensor, etc.