Showing articles & questions for topic
P0121

Related articles

P0121 OBD-II Trouble Code: TPS "A" Circuit Range Performance Problem
P0121 code definition Throttle Pedal Position Sensor/Switch (TPS) A Circuit Range Performance Problem What the P0121 code means P0121 is a generic OBD-II code which indicates that the Engine Control...

Related questions

Question
Codes P0121, P0221, P2101, P2104, P2110, P2111
Here are the codes, what they mean and the potential causes below each of them. Note that some of them may be related and can cause additional codes to be triggered that may be fixed when one of it's related...
Question
Throttle Position Sensor
The throttle position sensor is a very common part on most cars, however it is specific to your vehicle's engine application. This is something that ca be purchased at most local auto parts stores (i.e. Autozone, Oreily's, etc.) relatively inexpensively....
Question
Reduced Engine performance message, car cannot exceed 10 mph
Hello, thank you for writing in. The engine codes you are receiving are indicating that your throttle position sensor and its circuit are not functioning correctly. If you are comfortable with swapping the entire unit out, then that is the...

Need a mechanic?

Our certified mobile mechanics make house calls in over 700 U.S. cities. Fast, free online quotes for your car repair.

Get a quote

Post a question and get free advice from our certified mechanics.


Ask a question