430 P1134 and P1121

Trying to gain some insight into these codes I have in the background. I have zero lights on the dash, these were pulled from the left and right ECU's as a "let's see if there's anything in there." I cleared them as I figured maybe swapping out the lower Intake Manifolds somehow populated them (I replaced with scuderia lower manifolds, I wanted the polished stacks!) But that was over a month ago, so they have "repopulated" since. Again, no check engine light.

I have plenty of mods including the 360Trev tune, and the car runs like an absolute champ, so it doesn't seem like they're actually affecting anything? Can someone offer some info on what these codes are to begin with?

About the ONLY thing that I noticed that was not there at 8 am but was present at 4 pm one day taking it to work is the exhaust for some reason doesn't sound as it did. This issue just started happening within the last couple drives - NOT immediately after replacing the intake manifolds so there very much should be nothing wrong there. I would always love shifting at 4-4500 RPM as there's a raw growl at that point, for some reason it doesn't seem like that's there any longer. It also sounds a bit more quiet as well. The loudness I would get at 4500 isn't present until over 6500 now. I thought maybe the exhaust controller was flaking out, but it is fully operational with no exhaust leaks or issues. I realize it's extremely difficult to not only describe noises but also help in diagnosis of noises without the car in front of ya, but figured I'd give it a shot anyway.

I have already done a master switch reset and even replaced my battery just yesterday as I didn't know how old it was, no change.

Any correlation to the codes and lack of exhaust noise? Or are they two separate issues? Thanks guys

- Shane

 

Is there a known list of OBD2 codes for 430, and is it different from the 360?

 

Sent me an e mail address as i have a big list, the 2 you are quoting are not shown that i can see

 

Look at wiring fir temp sensors
Look at wiring for 02 sensor .. passenger side
Flip O2 sensors(downstream) and see it problem moves

 

There is a chart of "all of the codes for the 430" that I had found but as mentioned in the below quote, for some reason these two codes aren't present on it. It goes from 1120 to 1122, and 1131 to 1135 or something like that so that's why I posted up here. Confused as to why I have errors in the background that don't actually exist...

I found likely the same chart in my searching and yeah, I didn't see them on there either. One of the reasons I posted.

I contacted Sam who did the tune (in no way are they responsible for the codes at all) and he confirmed with Trevor that the codes state they are related to MAF issues, not O2 sensors. Apparently they are worded as: "MAF Air Temperature Sensor Validity Error in Ambient Data." This is another reason I was confused as I too thought they related to oxygen sensors. A bit of conflicting information. Wiring is absolutely perfect, pins are in good condition, and all sensors are fully seated in their connections. As for swapping oxygen sensors, these codes relate to both the left and right side, so I would ultimately have the same codes populate...

 

No better than someone looking at code and seeing what parameters set off codes - that is 100%