What usually causes it
- A failed throttle position sensor
- A short in the wiring
- A loose plug or bad ground
- A fault in the throttle body
P0123Starts at: Get it checked this week
Throttle sensor signal is too high
The throttle position sensor reports how far the throttle flap is open. Its signal is higher than it should be.
What to watch for
- The car suddenly has little power and the engine will not speed up
- Stalling or a rough idle
- The gas pedal feels dead, or the car surges
Can I keep driving?
We rate P0123 as Get it checked this week. It is not an emergency yet, but it can get worse. If the light starts flashing, stop driving soon.
Quick answers about P0123
What does P0123 mean?
Throttle sensor signal is too high. The throttle position sensor reports how far the throttle flap is open. Its signal is higher than it should be.
Can I keep driving with P0123?
We rate P0123 as Get it checked this week. It is not an emergency yet, but it can get worse. If the light starts flashing, stop driving soon.
What usually causes P0123?
The most common causes, in order: A failed throttle position sensor; A short in the wiring; A loose plug or bad ground; A fault in the throttle body.
Estimates only. A mechanic should confirm. The same code can mean slightly different things on different cars; the app explains it for your exact year, make, model and mileage.