P0430 code

[phillip975]

where do I start ? anybody had this code I just got this 2004 Z71 Tahoe please help

Is that a faulty Cat problem or o2 sensors truck seems to run fine no misfires from reading the gmtec2 scan tool

 

[wicked1000r]

As the code description implies the P0430 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. If the P0430 code is combined with other codes, try fixing the other codes first.

Read more: http://engine-codes.com/p0430_chevrolet.html#ixzz2OXT1M8nR

 

[phillip975]

nope its the only code

 

[DCT]

It's the catalytic, very common unfortunately (especially in CA $$$). The O2 sensors are working (one before and after each cat), that's how it is sensing below spec and triggering the code. If the sensors weren't working, it would be a different code.

 

[Mr.Martin]

Do a cat delete, get a tune and have the rear 02 sensors turned off. No codes, better sound and performance, and cheaper than replacing converters.