QuestionA few weeks ago the check engine light began to intermittently come on, and the vehicle would occasionally lose power. We had the engine light checked and was told it was the TPS sensor. In the meantime, we began hearing a rattle from the engine and the ESC OFF light came on and stayed on. We did replace the TPS Sensor and now the car has a pulsating idle, the ESC OFF light is still on, and the check engine light is still on. I have checked for any other vacuum leaks and found none. Is there some sort of adjustment that needs to be made? Any suggestions on what may need to be checked next?
AnswerHi, Jenny. I have a few questions because there's a technical service bulletin (TSB) regarding replacing the TPS sensor on 2006 Sonatas with the V6 engine, and because this sensor wasn't originally available separately, but rather released specifically in conjunction with this TSB.
1. What engine does your car have (2.4L 4 Cylinder or 3.3L V6)?
2. Who did the diagnosis on the check engine lamp?
3. What were the specific trouble codes found?
4. Were the trouble codes erased after replacing the sensor?
5. Were the trouble codes rechecked after replacing the sensor?
6. If so, what were the codes?
There is no adjustment for this sensor, but if it is installed incorrectly, you'll have severe power loss as the engine control module (ECM) will limit the amount of fuel delivered because it cannot accurately determine throttle opening.
The TSB I've referenced above recommends replacing the TPS as well as reprogramming the ECM for certain TPS-related trouble codes. If you can give me the actual trouble codes (five character codes with a P, C, B, or U followed by four typically numeric digits), it'll help me know what the specific issue is with your vehicle and how to recommend that you proceed.
