Codes p2135 and 1681

[djyeti]

When my car (06 ss/sc)sits over night and I start it in the morning I get code 2135 and it goes into limp mode. sometimes 1681 also. If I clear the code and drive right away it won't come back. Only does it at idle and when the car is cold. Anyone have experience with these codes? Wiring or sensors?

 

[YelloEye]

DTC P2135 Throttle Position (TP) Sensor 1-2 Correlation

DTC P1681 Control Module Throttle Position (TP) System Performance

There's a long list of diagnostics to do but all require a Tech2.

 

[djyeti]

Sweet haha....So annoying. Thanks again!

 

[djyeti]

Got a shop to run diagnostics and everything is pointing to the throttle body... looking at getting the ls4 tb, adapter and coupler from zzp. Is there any better recommendations?

 

[YelloEye]

You'll need tuning if you decide to go that route in order to compensate for the added air.

 

[djyeti]

Nothings easy with these cars.

---------- Post added at 08:27 PM ---------- Previous post was at 08:10 PM ----------

I guess I should go hard and get the stage 2 at the same time.

 

[djyeti]

Alright I ended up going with stock throttle body because apparently the ls4 isn't really worth it unless you are highly tuning the car. I probably won't do any more than a stage 2.
My problems seem to have disappeared. No more weird idles and sometimes stalling at red lights and no more codes! Driving around with a odb2 reader to clear codes was getting annoying.