---- NO Trouble Codes

went and bought a code reader... and there doesn't seem to be any Trouble Codes, at least that's what the code reader is displaying.

2000 Jeep Cherokee
91000 miles
Check engine light (o2 sensor) was on for about 3-4 weeks.
I was going down the road and it stalled. It will turn over, but not start.

thnx in advance,
rex

there is a fuse in the power distribution center under the hood for the o2 sensor heater. that usually blows when the wiring for the downstream o2 shorts, like it rubbed the driveshaft. does the check engine light illuminate when you first turn the key on. if not one of the sensors could internally short out and shut the pcm down. therefore you wouldnt get a check engine light. if that is the case just unplug the sensors one at a time until the light comes on. i would start with the crank sensor first. that is the most common.