code 2135 throttle pos sensor for the 3rd time!!!

[Billster]

06 mustang gt SCT Tuned. code 2135 throttle pos sensor for the 3rd time in 2 years, could it be the tuner or what? stumped

[J]

some info here.... http://www.modularfords.com/f79/code-2135-throttle-pos-sensor-156262/