AP0122 code is the generic OBD-II code defined as "Throttle Pedal Position Sensor/Switch (TPS) A Circuit Low Input.". This code relates to the vehicle's Engine Control Module (ECM) and TPS Thetrouble codes that are stored in the computer can tell a lot about what is actually going on. This makes diagnosing the throttle body much easier. P0121- Throttle position sensor "A" circuit range/performance is the most likely code you'll experience if your van has a throttle body issue. Rough or Unstable Idle, Stalling 2 your engine misfires and shakes: if a map sensor reports a false high pressure reading, the engine's computer will signal for more fuel. this results in a rich mixture, which can foul the spark plugs and cause a cylinder not to fire. a misfiring engine will shake and transmit that motion into the cabin of the vehicle. Wego over where the throttle position is, how to replace it, and what error codes lead us to replace the TPS. Our error codes for the Jeep were 14 and 24, 1 Thethrottle position sensor responds to the accelerator pedal movement. The sensor detects the opening and closing of the throttle valve and feeds that info Resettingthe throttle position sensor on Dodge Ram is super simple. Insert the key to ignition and then turn it on. You will not be starting the engine, just turn the key to the next right stop. You should see a mark like "On" on the side of the ignition. All the idiot lights should be on. Checkprices not too cost prohibitive. It would be nice to know. TPS voltage should range between 1.19 and 1.31 volts. Lower or higher could be a symptom of a failing sensor. travelers said: Right side of the throttle body. Not if you're looking at the front of it. It's on the left. Simplyleave the key in the 'on' position without starting the engine (or push the button once). Then, hold the accelerator pedal down for about 20 seconds. Slowly release the pedal and turn the vehicle off. Then start the engine as you normally would and go for a quick drive to see if this trick helped. Save J. jbo · #5 · Jan 30, 2003. Your TPS does need to be adjusted, loosen both set screws on the sensor and apply vacuum to the thottle opener (dash pod). Insert a 0.026 thickness gauge between the throttle stop screw and stop lever. Connect a ohmmeter to the bottom two terminals of the sensor. Gradually turn the sensor clockwise until the Measurethe resistance between the Yellow and Black terminals, with the throttle closed. If it does not fall within the desired range, then by loosening the M4 screws holding the TPS to the bracket, you can rotate the TPS until it shows the correct reading on the Ohmmeter. With the right setting established, retighten the screws. 1 Check Engine Light This is usually the first sign something is wrong with the TPS sensor. It could also be a sign of something else, even something simple, like a desperate need for an oil change. The check engine light is an annoying occurrence and most people, unfortunately, don't pay a lot of attention to it. Thethrottle position sensor (TPS) on most vehicles is located in the engine compartment. It sends input to the electronic engine control so that ignition and fuel injection timing can be adjusted for proper engine operation. When a throttle position sensor goes bad, your vehicle may stall or run rough at idle, and may stumble upon acceleration. Undothe hex bolts that hold the throttle position sensor in place and set these screws safely to the side. Your TPS should now be ready to slide out and off the throttle body. Inspect the area and clean if you see any gunk or oily residue, and do not allow your throttle body to become contaminated. Our old TPS and the new replacement TPS. Note Step3 - Remove the TPS sensor. Figure 5. TPS. Figure 6. TPS. Make sure to remove the TPS sensor and 2 screws that connect to bottom of throttle body. Once the old sensor is off, replace it with the new one. Clean the throttle body really well, then install it back by reversing the steps above. JeremyMcCallister said: I think my throttle position sensor is going out. I seem to have a dead spot in my throttle around the quarter throttle area. Whenever I have the pedal in about the 25% area the truck surges as I move the throttle back and forth through that range. It has a range of about 1/4" that while the throttle is in that range AWHdM4.

how do you know when your tps sensor is bad