Check MyEngine Light
P2135Starts at: Get it checked this week

Throttle or gas pedal sensors disagree

Cars with an electronic throttle use two sensors that should always agree on how far the throttle is open. Here they do not agree.

SensorsFix: Best left to a shop

What usually causes it

  1. A failing throttle position or pedal sensor
  2. A dirty throttle body, the housing around the throttle flap
  3. A damaged wire or a loose plug
  4. A failing throttle motor

What to watch for

  • The car suddenly has little power
  • Stalling or a rough idle
  • The gas pedal feels dead, or the car surges

Can I keep driving?

We rate P2135 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 P2135

What does P2135 mean?

Throttle or gas pedal sensors disagree. Cars with an electronic throttle use two sensors that should always agree on how far the throttle is open. Here they do not agree.

Can I keep driving with P2135?

We rate P2135 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 P2135?

The most common causes, in order: A failing throttle position or pedal sensor; A dirty throttle body, the housing around the throttle flap; A damaged wire or a loose plug; A failing throttle motor.

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.