P2106 Throttle Actuator Control System - Forced Limited Power
Description and meaning of DTC p2106
This generic powertrain diagnostic trouble code (DTC) typically applies to all OBD-II equipped vehicles that use a drive-by-wire throttle control system including but not limited to vehicles from Ford, Mercedes Benz, Mazda, Kia, Hyundai, Dodge / Ram, Land Rover, VW, Jaguar, tc. The P2106 OBD-II trouble code is one of number of possible codes that indicates that the Powertrain Control Module (PCM) has detected a malfunction and is limiting the operation of the Throttle Actuator Control SystemThis situation is known as activating a fail-safe or limp mode to prevent the engine from accelerating until this malfunction is corrected and the associated code is cleared. There are four codes that are referred to as force codes and they are P2104, P2105, P2106 and P2110. The PCM sets these when other codes are present that indicate an issue that may be safety related or cause damage to the engine or drivetrain components if not corrected in a timely manner. Code P2106 is set by the PCM to force the Throttle Actuator Control System to limit the power level of the engine. This code can be related to a Throttle Actuator Control System malfunction, but normally another issue is setting this code. Trouble code P2106 is triggered by the PCM when it receives an abnormal signal from various components. The Throttle Actuator Control System is duty cycle controlled by the PCM and the function of the system is limited when other fault codes are detected.
p2106 diagnostic trouble code symptoms
The severity of this code can be moderate to severe based on the specific malfunction. Symptoms of a P2106 trouble code may include: Engine will not startLittle or no throttle responseCheck Engine Light illuminatedABS Light illuminatedAutomatic transmission will not shiftAdditional codes are present
DTC p2106 - possible causes
Repair coolant leakReplacing or cleaning ABS sensorReplacing or cleaning EGR ValveReplacing or cleaning Mass Airflow sensorCleaning corrosion from connectorsRepairing or replacing wiringFlashing or replacing PCM
How to fix OBD-II diagnostic trouble code p2106
The first step in the troubleshooting process for any malfunction is to research the Technical Service Bulletins (TSB's) for the specific vehicle by year, model and power plant. In some circumstances this can save a lot of time in the long run by pointing you in the right direction. This is an important step, just as one example, some Fords from 2003-2005 are affected by a P2106 and/or other code and the fix is to reprogram the PCM. The second step for this code is to complete a PCM scan to identify other trouble codes. This code is an informational code and in most circumstances this code’s function is to alert a driver that the PCM has initiated a fail-safe mode because of a malfunction or failure in a system that is not directly related to the Throttle Control Actuator. If other codes are identified you should check for TSB's related to the specific vehicle and that code. If a TSB has not been generated you should follow the specific troubleshooting steps for that code to pinpoint the source of the malfunction that the PCM is detecting to put the engine in fail-safe or limp mode. Once all other codes have been cleared or if no other codes are detected, if the Throttle Control Actuator code still exists the PCM and Throttle Control Actuator should be evaluated. All wiring and connections should be visually inspected for obvious defects as a starting point. Common MistakeReplacing the Throttle Control Actuator or PCM when other malfunctions are setting this code. Rare RepairReplace Throttle Actuator Control Hopefully, the information in this article has been helpful to point you in the right direction to correct the problem with your Throttle Actuator Control System force code. This article is strictly informational and the specific technical data and service bulletins for your vehicle should always take priority.