P2100 - P2100 - THROTTLE ACTUATOR A CONTROL MOTOR CIRCUIT OPEN

POST UPDATED IN May, 2021

Description of DTC code P2100 Generic

The Throttle Actuator is located at the front or top of the engine and is operated by the car’s computer through an electrical signal.

The Powertrain Control Module (PCM) relies on voltage signals from the coolant temperature, intake air temperature, engine RPM, and air conditioning pressure sensors. In this way, it determines when and how long the Throttle Actuator is required to operate.

When the DTC P2100 OBD2 code is set, it means that the Throttle Actuator Control (TAC) motor circuit is open. For this reason, it will not work.

Symptoms of fault code P2100 Generic

  • The Check Engine lamp illuminates.
  • The idle speed is fixed.
  • The vehicle cannot be accelerated.

Causes of OBD2 P2100 Generic

The causes of the setting of the P2100 OBDII diagnostic code are:

  • The Accelerator Actuator electrical circuit may have failed.
  • Perhaps, the Throttle Actuator is defective.

Possible solutions of the DTC code P2100 Generic

To fix the P2100 OBD2 error code, try this:

  • Check the Technical Service Bulletins available for your vehicle. The manufacturer may have the solution.
  • After locating the Throttle Actuator, check the wiring system and the connectors leading to it. If you find burnt, worn wires or connectors that have corrosion, repair or replace if necessary. After, clear the code.
  • Use a DVOM to check the resistance of the Throttle Actuator. You should get a resistance within the specifications given by the manufacturer. An infinite resistance or no resistance at all will require the replacement of the actuator.

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