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OBD II Fault Code

  • OBD II P2620

OBD-II Code Decreased engine performance is defined as a Throttle Position Output Circuit/Open

The Throttle Position Sensor/Switch is located on the Throttle Body of the Intake Manifold and the Pedal Position Sensor/Switch is part of the Accelerator Pedal assembly. These sensors tell the engine control module (PCM) how fast the driver wants to go and how quickly it needs to get up to speed. When the PCM detects a problem with this sensor or the circuit for the sensor, it will set code P2620.The PCM may also limit the speed of the vehicle to 20 miles per hour or less ("Limp home mode") to protect the engine and the driver due to the control module's inability to accurately detect the engine performance being requested.

Decreased engine performance Symptoms

  • Decreased engine performance
  • Engine may enter limp home mode (reduced performance)
  • Increased fuel consumption

Common Problems That Trigger the P2620 Code

  • Powertrain Control Module (PCM) failure
  • Throttle control motor failure
  • Wiring issue

Common Repairs Needed for the P2620 Code

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