Having problems with your 2004 Dodge Intrepid ?
What does the code P0420 means in a 2004 dodge intrepid
A code P0420 may mean that the O2 (oxygen sensor) has gone bad and needs to be replaced. This is not detrimental to the operation of your vehicle but could make you fail an emissions inspection if your state requires them
Repair Help & Product Troubleshooting for 2004 Dodge Intrepid
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