Lots of codes
#1
![Default](/forum/images/icons/icon1.gif)
I have an 2007 suburban LTZ 5.3 with 140,000 miles. Earlier this year I got a CEL for P0420 and P0430 catalyst b # 1 and 2. So I took the car to the dealer they quoted me for the cats to be replaced. I had them replaced and the codes kept popping up. Now after spending a lot of money at the dealer and various other shops these are the codes I have P0121 TPS, P0496 evap emission system flow, P0172 and 0175 system rich in bank 1 and 2, P0420 and 0430 for the cats. I'm familiar with these codes but where do I start? With the evap purge valve or the throttle body? The gas cap is new and the the throttle body is clean.
#2
Administrator
![Default](/forum/images/icons/icon1.gif)
Welcome to the forum...
The Evap and throttle position are probably real, though I would focus on the TPS as the evap will not cause any drive-ability issues the TPS will....
As for the cat codes, I would have started with the O2 sensors before assuming the cats were bad considering the cost...
The Evap and throttle position are probably real, though I would focus on the TPS as the evap will not cause any drive-ability issues the TPS will....
As for the cat codes, I would have started with the O2 sensors before assuming the cats were bad considering the cost...
#3
![Default](/forum/images/icons/icon1.gif)
Thanks for the response and I've been trying to get this car through emission since August. . But I'm going to get working on the TPS in the morning. Then o2 sensors.
Thread
Thread Starter
Forum
Replies
Last Post
PCIdiot
OLD - PRIVATE For Sale / Trade Classifieds
2
October 16th, 2017 3:26 PM
TylerWalker
Silverado, Sierra & Fullsize Pick-ups
12
April 22nd, 2008 10:37 AM
ironcy
Tahoe & Suburban
6
January 1st, 2007 5:35 PM