Pontiac G8 Forum banner

Engine Codes After Cat Delete & headers

353 Views 3 Replies 3 Participants Last post by  Thawk
Engine code help
馃檪
Calling all Technicians, Lol!
I did cat delete, & headers, and I know I need to get it tuned.
Here's the codes I'm getting:
P0443 Purge Solenoid Valve Control Circuit
P3441 & P3449 Cylinder (1,7,6,etc...about 4-5 cylinders) Deactivation Solenoid Valve Control Circuit
P0135 H02S Heater Performance Sensor 1
P0060 H02S Heater Resistance Bank sensor2
TIA I really appreciate this community and being able to come to you guys:)
ALSO, the tranny seems to be shifting harder since doing all this. Would that have anything to do with the tranny breather Valve/hose (came loose during install), or u think a tune would help? Thanks Again!!
See less See more
1 - 4 of 4 Posts
Did you get everything reconnected and tied away from the headers? You shouldn't be seeing all those codes with just a header install. You should have a P0420/430 after a few drives from cat inefficiency
Did you get everything reconnected and tied away from the headers? You shouldn't be seeing all those codes with just a header install. You should have a P0420/430 after a few drives from cat inefficiency
Yes, sir :) Pretty straightforward install, and everything all connected back up, plugged in, etc. I'm thinking I may just get the rear 02's tuned out, and get it tuned for the new set-up and go from there.
The o2 sensor codes will go away once tuned out, the 443 is from the purge valve either open or disconnected, valve should read ~ 20 ohms across terminals disconnected, carefully check connector and terminal fit also at VLOM connector
  • Like
Reactions: 2
1 - 4 of 4 Posts
Top