p0431

I am receiving a P0431 error code from a 2006 Jeep Wrangler Unlimited (132,000 miles, 4.0 and 42RLE). P0431: Warm up catalytic converter, bank 2 - efficiency below threshold. Here is a sample of the voltages of the the bank 1 and 2 upstream and downstream O2 sensors: What are your...

I THINK THIS IS MY SECOND POST AND I HAVE BEEN LOOKING AROUND QUITE ABIT ABOUT THIS ON THIS FORUM AND OTHERS. I have 2005 Rubicon 2 door inline 6 100k miles had her since 2018 automatic 42rle been getting CA emissions 4 o2 sensors : Current Issue p0031 p0037 p0051 and p0057 . I had these...

I am troubleshooting a p0431 code on my 05 Sport, "warm-up catalyst efficiency below threshold, bank 2". I have ordered both NTK o2 upstream sensors which may correct the problem. However I plan to also replace the Pre cats as PM cuz it has 101k. I plan to unbolt the 2 pipes connected to the...

On day 3 of my new to me 05 Sport with 101k I'm in rush hour traffic, the tj bucks 1x and the CEL comes on. AZ reads the CEL and it shows a P-0431 code which says... "Warm Up Catalyst Efficiency Below Threshold (Bank 2)" There are two catalytic converters coming off the exhaust manifold. My...

Hi All I'm not sure what to do about my error code. Thanks @Chris for the list. Apparently the warranty says free replacement of Cat for 8 yrs or 80k miles. Do I get free replacement because I have 52k? As well, what size Bilstein shocks should I get with a 2 inch lift? This will be my first...