code-P1510 = EFI Limited Performance Mode
There are two position sensors in the twist grip. one reads 0V at full throttle and 5V at closed throttle and the other reads 5V at full throttle and 0V at closed.
If the volts coming back from the 2 sensors dont add to 5V, or one sensor gives a voltage that doesnt make sense, then it raises the code.
You might have a loose wire in the TGS green connector in the bars.
I had that code on mine and looked it up, replugged the connectors and that sorted it out.
i suspect the other code would be tgs related as well but do not know what it means for sure
2011 Road Glide Ultra
68 shovel 40 over denvers....
Last edited by mroach; 11-21-2011 at 08:41 PM.