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P2101 is a diagnostic trouble code (DTC) for "Throttle Actuator Control Motor Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Throttle Actuator Control Motor Circuit Range/Performance
P2101 is an OBD-II generic code for the engine control module (ECM) detecting the throttle actuator control (TAC) went out of the range of the circuit causing an open circuit to be detected in the TAC motor.
The engine control module (ECM) signal returns from the TAC is an open circuit.
The TAC motor wires are cross wired causing an open circuit to the ECM.
Harness or connector has an open circuit or the connector is loose.
The Check Engine Light will be illuminated and the code is set in ECM memory as a fault.
The engine will not accelerate and no throttle response will happen.
The engine will idle and that is all. The idle may be lower or higher than normal.
Scans codes and documents the code in the ECM
Diagnoses the code as per the manufacturer's pinpoint test to verify the TAC signal
Operates the accelerator pedal while monitoring throttle position sensors and TAC operation
Checks the harness and connection to the TAC visually for problems and connector is on
Tests the TAC as per the manufacturer’s specified pinpoint test
Clearing ECM memory codes before checking the freeze frame data of the TAC failure so the failure may be duplicated
Failing to clear ECM codes after the P2101 codes are fixed
Replacing the TAC when the problem has not been duplicated
Code P2101 is an indication that the TAC is not able to open and close the throttle plates and the engine will not accelerate and would not be drivable.
Replacing the TAC assembly if it fails all pinpoint tests and problem has been verified
Repairing the wiring or connection to the TAC assembly
Replacing the ECM as directed by the pinpoint test
Code P2101 can be generated without an error on some vehicles if the accelerator pedal is pressed before turning on the key. A key recycle without touching the pedal may fix the problem even though the code is set in memory and the check engine light will be on and would need to be reset. This is why it is important to verify the problem before any repairs are done.
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.