Having problems with your 2005 Chrysler Town & Country ?
What fuse controls the O2 sensor heater? My engine light stays on. I went to autozone and had them run a diagnostic. It coded the fuse for the O2 sensor. I have previously changed the cat conv. and both O2 sensors.
There is no fuse for the heater on the o2 sensor if the heater isn't working its usually the o2 sensors bad. (even a new light bulb can come out of the box and not work) but it could be in the wiring.
Repair Help & Product Troubleshooting for 2005 Chrysler Town & Country
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