P0122 has nothing to do with "throttle/pedal position sensor". It is a TPS(throttle position sensor). following is the test to check the TPS. Tests/Procedures: 1. Check the wiring harness real close for damage. The Violet/White wire should have 5 volts on it. The Black/Blue wire should have 0 volts, this is the ground. The Orange/Blue wire is the signal wire and normally is at 0.5 volts at closed throttle and increases with throttle opening. This circuit will have 5 volts on it with the sensor disconnected. Look for wires melted together or shorting to ground for this circuit. Repair as needed. The TPS is located on the throttle body.