All 4 oxygen sensors reading bad on a chrysler 300c 2005.

The chance that all sensors are bad at once is very small. I'd be looking for a possible wiring issue - perhaps damage to wiring that feeds all 4 sensors. All 4 codes read "circuit high" - so I'd get help from someone with a wiring diagram and workshop manual and proper test equipment to check out that circuit to figure out if there is a common correlating cause to all 4 sensor codes. Do not replace sensors! Unless they were just replaced with wrong or inferior ones, they are not the problem. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops