Throttle/Pedal Position Sensor/Switch ‘A’/’B’ Voltage Correlation


Table of contents

P2135 Possible Causes

  • Faulty electric throttle control actuator (TP sensor 1 and 2)
  • Throttle Position Sensor harness is open or shorted
  • Throttle Position Sensor circuit poor connection
  • Faulty accelerator pedal position sensor

How do I fix code P2135?

  Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Tech Notes

  User Submitted Video

Cost of diagnosing the P2135 code

  The cost of diagnosing the P2135 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2135 Description

  Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM). In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

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