How many oxygen sensors does a 2003 jeep grand Cherokee have?

Answer 1

It depends if it is a California emissions model. If it is not there should be 2 O2 sensors. One before and one after the cat. converted. If it is a Cali emissions model then there are most likely 4 O2 sensors. Two before the 2 mini cat. converters and 2 downstream of the cat converters. The check engine error codes will tell you which bank and sensor number.

I have a Grand Cherokee limited 2004 Cali model and there are 4 O2 sensors.

The link (in realted links sections) will show you where the o2 sensors are located and how to change them.