Hi all:
I have a 2008 Chrysler Sebring Hardtop with a 3.5L
I got the codes P0430 and P0133 and after some research, I thought it was going to be a O2 sensor but with more research it might be a cat.
I have put some videos of the readings I got from my scanner and just looking for a second opinion on with I should be replacing
Thanks in advance for the advice.

 

gracias buena respuesta y corta





192.168.100.1 192.168.1.1

 

I have had a bad upstream O2 sensor throw a cat efficiency code. ('06 Charger w/ 3.5l). Replaced the upstream O2 sensor and the cat code went and stayed away.

The cat code is set when there is not enough difference seen between the upstream and downstream O2 readings. The upstream one should be bouncing continually to adjust the air/fuel mixture. Once the exhaust gets through the cat, the downstream reading should be very steady as the exhaust has been 'cleaned'. If the upstream is 'lazy' or reacting slowly there may not enough of a difference from the downstream reading and the cat code is set.

Only replace with OE/NTK/Denso O2 sensors. No Bosch or auto parts store branded sensors as they do not play well with chryslers. If your budget allows I would suggest replacing both upstream O2 sensors. Rockauto has O2 sensors that are priced below auto parts stores.

 

thanks for the info