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Grand Cherokee > Engine > Error codes > P0420 Code Keeps Coming Back on My Jeep Grand Cherokee: How to Solve It? >

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Title: P0420 Code Keeps Coming Back on My Jeep Grand Cherokee: How to Solve It?
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v8ismyheart
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#1
09-26-2024, 08:35 PM
Guys, I keep getting the P0420 code on my 2012 Jeep Grand Cherokee. I’ve cleared it, replaced the O2 sensor, and even checked the catalytic converter, but it keeps coming back. What else could be causing this? Do I need a full-on cat replacement, or is there some Jeep-specific trick I’m missing?
 
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