[05 titan junkie]

Hey everyone I have 05 titan 4x4 recently had P0430 and P0440...I replaced down stream cats then I got the same codes again so I replaced the down stream O2 sensors....I am now getting the P0430 again...I am broke and trying to find fix so I don't waste money I don't have....registration is expired and cant afford to have truck impounded with newborn....advice please

 

[MikeClark]

Who advised you to replace the downstream cats and 02 sensors? You have cracked exhaust manifolds. Give the guys over at cajun bpipes.com a call and they will walk you through the process. They have helped countless people on this forum, all stock manifolds crack it's a common problem with titans.