Q: Throttle position sensor light on

asked by on

Last week the check engine light came on so I looked and it said "throttle position sensor" P0120. I proceeded to replace it but that did not fix the problem. I continued to replace the ECM and the problem was solved. However, the transmission is now shifting very hard. This started when the TPS went bad. What should I do to fix it?

For many vehicles, regardless of manufacturer, there is the need to do a "re-learn" sequence (after replacing the TPS or a battery) so the TPS and transmission will work smoothly. You may have to drive the vehicle for a bit in order this re-learning procedure to complete. If you are still having problems after a couple of weeks, I recommend having a professional mechanic inspect the shifting issue and check the TPS and transmission for proper operation.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Throttle position sensor light on

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Neutral Safety Switch

Hi Chris, Your vehicle's neutral safety switch prevents the vehicle from starting when it is in any gear position other than park or neutral. If this has been removed, your car will not operate correctly as this is is a...

Q: where is the ecm control modu

The ECM is located behind the left front wheel well cover splash cover.

Q: Engine revs really high up when I idle

Hello, by the way you describe your concern, it sounds like the vehicle has a high idle, or an idle flare at a stop. Check for the Technical Service Bulletin (TSB 01-005/14) for an updated software/firmware to help remedy this...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...