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P2106 OBD-II Trouble Code: Throttle Actuator Control System Forced Limited Power

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P2106 trouble code definition

Throttle Actuator Control System Forced Limited Power

What the P2106 code means

P2106 is an OBD-II generic code for the engine control module (ECM) detecting a major failure in a system causing the ECM to go into failure mode and limiting the throttle actuator to limited power.

What causes the P2106 code?

  • The engine control module (ECM) is in failure management mode.
  • The throttle actuator control (TAC) system is limited on power and code P2106 is set.
  • Problem may be in any system that can cause the ECM to go into failure management mode.

What are the symptoms of the P2106 code?

  • The Check Engine Light will be illuminated and the code is set in ECM memory as a fault along with the failure that caused the ECU to go into failure mode.

  • The engine will have limited acceleration and slow throttle response.

  • Symptoms will depend on the issue that caused the failure mode.

How does a mechanic diagnose the P2106 code?

  • Scans codes and documents the code in the ECM

  • Diagnoses all codes as per the manufacturer's pinpoint tests

  • Diagnoses and repairs codes other than P2106 first

Common mistakes when diagnosing the P2106 code

  • Clearing the ECM memory codes before checking the freeze frame data of the main failure so the failure may be duplicated and repaired

  • Failing to clear ECM codes after the codes are fixed

  • Diagnosing code P2106 before diagnosing other codes first

How serious is the P2106 code?

Code P2106 is an indication that the ECM is in failure management mode and has limited power to the throttle control actuator system. The problem may be in another system causing the problem.

What repairs can fix the P2106 code?

Diagnosing and repairing other codes received first before addressing code P2106

Additional comments for consideration regarding the P2106 code

Code P2106 can be generated without an error to the throttle actuator. The code is set due to another system has failed and caused the ECM to go into failure mode. All other codes should be checked and repaired first.

Need help with a P2106 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
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