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I have 2005 TJ with a 4" lift. The check engine light comes on, (133, 153). I have replaced both O2 sencers but they keep coming back. However it did seem to go away during the winter. Any suggestions would be greatly appreciated.
 

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I have 2005 TJ with a 4" lift. The check engine light comes on, (133, 153). I have replaced both O2 sencers but they keep coming back. However it did seem to go away during the winter. Any suggestions would be greatly appreciated.
If you used any o2 sensor other that NTK (especially Bosch) they likely need to be replaced. Rockauto.com is the cheapest place to get them.
 
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