Discover the World of P0123 A Comprehensive Overview

P0123 (M) Throttle Position Sensor Voltage High Throttle position sensor input above the maximum acceptable voltage. P0123 is not a recognized code. The translation given on your scanner's screen hints that one of the two potentiometers in the "gas" pedal has a wiring fault. I hear this is an electrical issue but the voltage to the TPS is 4.95v and the ground is solid against the battery at 12.35v. 1) spend 45 minutes taking things off / looking for sensor 2) open hood, see sensor 3) take 3 minutes to replace Steps with pictures! P0123 points to a Throttle Position Sensor voltage problem. Type P0123 into the search bar. There are several threads to peruse. Get a TPS wiring harness rewire kit as suggested and try that first. If it doesn't correct the issue replace the TPS sensor. The problem is the code only comes back after i accelerate through a right turn so i dont see how replacing the tb would fix said issue. Check for open circuit and harness damage between throttle position sensor connector B-10 (terminal No. 3) and ECM connector B-108 (terminal No. 13). The jeep will start fine and idle for a few seconds, then the RPMs will fluctuate and eventually stall. Not too sure what would cause this though. A P0123 code means that the car's computer has detected that the TPS (throttle position sensor) is reporting too high a voltage.