Nissan Titan Forum banner

1 - 7 of 7 Posts

·
Registered
Joined
·
18 Posts
Discussion Starter #1
These are supposedly codes that show catalytic banks 1 and 2 are "not efficient".

You guys think cleaning the intake manifold would solve this problem? Or perhaps an EGR or PCV valve is clogged or something?

Would love to hear there's an easy fix. I don't like riding with the CEL on in case there's a REAL problem, obviously...
 

·
Registered
Joined
·
171 Posts
  • Like
Reactions: nightowl

·
Registered
Joined
·
912 Posts
Agreed with the above. Almost certainly bad manifolds and/or cats and Cajun is the cheapest and best option.

Sent from my SM-G955U using Tapatalk
 

·
Premium Member
Joined
·
20,942 Posts
It could just be that your OEM catalytic converters have given up the ghost. I had the P0430 for almost a year. In my case, I had put JBA LT headers on and re-used the Berk Technologies b-pipes that had been on for 50,000 miles. The b-pipe just couldn't keep up without having an upstream catalytic converter to help out. I had a custom set of b-pipes created that had two catalytic converters each. No more issue with codes and I'm now legal - I can pass both a sniffer and visual inspection.
 

·
Registered
Joined
·
912 Posts
It could just be that your OEM catalytic converters have given up the ghost. I had the P0430 for almost a year. In my case, I had put JBA LT headers on and re-used the Berk Technologies b-pipes that had been on for 50,000 miles. The b-pipe just couldn't keep up without having an upstream catalytic converter to help out. I had a custom set of b-pipes created that had two catalytic converters each. No more issue with codes and I'm now legal - I can pass both a sniffer and visual inspection.
Had that same problem with my headers and b pipes. A bung extender took care of that.

Sent from my SM-G955U using Tapatalk
 
1 - 7 of 7 Posts
Top