03 2500 hd check engin light
I have a 2003 2500 hd chevy with the 6.0 check engin light came on said it was the 02
sensor right bank behind the cat so I changed it reset the code 10 min later back on same
code exchanged 02 sensor put new one in tried again same thing now I'm stuck any ideas
Is the code rich/lean condition or heater circuit. If rich/lean condition check catalytic convertor. If heater circuit check fuse or open/shorted wire. Probably heater circuit if code came back so soon.
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