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Error Code P2106: Symptoms, Causes, Solution 2023

The error code P2106 is defined as Forced Power Limited Throttle Actuator Control System

This error code is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II system, especially those manufactured from 1996 to the present.


Specifications on defining, troubleshooting, and repairs, of course, vary from one make and model to another. This code, however, is more common among vehicles Ford, Mercedes Benz, Mazda, Kia, Hyundai, Dodge, Ram, Land Rover, Volkswagen, Jaguar.

Error code P2106 (Definition)

He error code P2106 occurs when The PCM (powertrain control module, also known as the Engine Control Module in other makes of vehicles) detects a major fault in a system that causes the PCM to enter failure mode and limit the throttle actuator to a limited power.

Read: PT Cruiser Error Code Problems

This situation is called “clean mode” or “safe mode” (depending on the make of the vehicle). This occurs to prevent the engine from further accelerating until the problem is resolved, including all associated error codes.

This code may be related to the malfunction of the Throttle Actuator Control System, but in many cases, there is another problem that this code sets. He P2106 It is activated when the PCM receives an abnormal signal from different components.

Common symptoms

Like other error codes, this code activates the light Check Engine and records the code into the vehicle’s memory system. Other common symptoms, of course, are related to limp mode, or safety mode, which are

  • No engine starting condition
  • Little or no throttle response
  • The ABS light comes on
  • The automatic transmission does not shift.

In some cases, other codes may be present along with P2106.

Additionally, symptoms may depend on the problem that caused the failure.

Possible causes

The most common cause of this code is the management code. PCM failures (limp mode, or fail-safe mode). Also, the problem may be in any system that causes the PCM to go into fault management mode. Other common causes are

  • Engine overheating
  • Engine coolant leak
  • MAF (mass air flow) malfunction
  • EGR valve malfunction
  • Modifications to the drive axle
  • Abnormal system voltages
  • Automatic transmission problem
  • Problems with ABS, traction control, or stability control

How to check it

P2106 is quite easy and simple to diagnose. First, technicians will use the scanner tool to scan and document PCM codes. They will then diagnose all codes present in the PCM using the manufacturer-specified pinpoint test.

Lastly, they will diagnose and repair P2106 first.

In many cases, such as Ford vehicles manufactured from 2003 to 2005, the most common repair for this code is to simply reprogram the PCM. Since this code is related to the Throttle Control Actuator putting the engine in Fail-Safe mode is quite common among most vehicle brands.

All cables and connectors should be visually checked for any obvious damage as a starting point for inspection.

How to fix it

The most common solution for this code is to replace the Throttle Actuator Control.

Other common repairs include:

  • Repair coolant leak, replace or refill engine coolant
  • Cleaning or replacing the ABS sensor
  • Cleaning or replacing the EGR valve
  • Cleaning or replacing the MAF sensor
  • Elimination of corrosion in connectors
  • Repair or replacement of wiring
  • Reflashing or replacing the PCM

The most common error when dealing with this code is to replace PCM or Throttle Control Actuator when in reality there are other faults that set the code. Therefore, it is important to have this code thoroughly diagnosed by a certified technician first, before any repair or replacement is performed.

If you want to know about other articles similar to Error Code P2106: Forced Power Limited Throttle Actuator Control System you can visit the category Fault Codes.


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