Engine-Codes - Toyota - P2121 2002 TOYOTA HIGHLANDER

P2121 2002 TOYOTA HIGHLANDER - Throttle/Pedal Position Sensor/Switch 'D' Circuit Range/Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P2121 2002 TOYOTA HIGHLANDER Possible Causes

  • Faulty Accelerator Pedal Position Sensor
  • Accelerator Pedal Position Sensor harness is open or shorted
  • Accelerator Pedal Position Sensor circuit poor electrical connection
  • Engine Control Module (ECM)

How is the P2121 2002 TOYOTA HIGHLANDER code repair?

Start by checking 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.

What is the cost to diagnose the P2121 2002 TOYOTA HIGHLANDER code

Labor: 1.0

The cost to diagnose the P2121 2002 TOYOTA HIGHLANDER code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

Possible Symptoms

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

P2121 2002 TOYOTA HIGHLANDER Meaning

The Accelerator Pedal Position Sensor is mounted on the accelerator pedal bracket. The accelerator pedal position sensor has two sensor elements/signal outputs: VPA and VPA2. VPA is used to detect the actual accelerator pedal angle (used for engine control) and VPA2 is used to detect malfunctions in VPA. When the difference between the voltage outputs of VPA and VPA2 deviate from the standard, the Engine Control Module (ECM) concludes the accelerator pedal position sensor has a malfunction.

More Information

Need more information on how to fix the P2121 2002 TOYOTA HIGHLANDER code?
Get Access to Factory Service Manuals

Need more help?

Get the P2121 2002 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area