The average cost for a throttle position sensor replacement is between $164 and $228. Labor costs are estimated between $57 and $74 while parts are priced between $107 and $154. Estimate does not include taxes and fees.Click to see full answer. Just so, what happens if throttle position sensor is bad? Engine won’t idle smoothly, idles too slowly, or stalls If you start to experience engine misfires, stalling, or rough idling when the car is stopped, it can also be a warning sign of a failing TPS. The TPS can also send bad input that ends up stalling the engine at any time.Likewise, does a throttle position sensor need to be programmed? Code errors can cause your throttle position sensor to work erratically or incorrectly. Otherwise, you’ll need professional software to reprogram your sensor. This job is best done by a professional mechanic. If your sensor just needs repairs, it could be the result of faulty or loose wiring. Also asked, how do I know if my throttle position sensor is bad? Symptoms of a Faulty Throttle Position Sensor An unexplainable bucking and jerking in the vehicle. Sudden idle surges. Sudden engine stalling without any apparent reason. Hesitation while accelerating. Sudden surges in speed while driving on the highway. Intermittently flashing of check engine light for no apparent reason. How do you reset throttle position sensor?Turn the ignition switch on and wait 3 seconds. Immediately after the 3 seconds, the accelerator pedal must be pressed and released 5 times within 5 seconds. Wait 7 seconds and fully press the accelerator pedal and hold for approximately 20 seconds until the check engine light stops blinking and stays on.

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