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P2103 is a diagnostic trouble code (DTC) for "Throttle Actuator Control Motor Circuit High". 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.
The P2103 code is a generic powertrain code related to the fuel or air metering system, including the mass air flow sensor. In this case, the engine control module (ECM) has detected a fault with the throttle actuator control motor circuit. Other control modules, including the transmission control module and body control module, may also store this code.
Codes related to the P2103 include:
A sensor on the accelerator pedal arm sends a voltage signal to the ECM (or related control module), which then commands the throttle body to open or close. Voltage signals sent from the ECM will activate the throttle actuator motor in the direction required by changing voltage levels and polarity. Then, as the throttle actuator motor turns, a gear in the throttle body turns and is meshed with a larger gear. The change in ratio allows the throttle plate to open quickly or slowly as needed.
A code P2103 will be stored when the ECM or other control module detects an error or fault with the throttle actuator control motor circuit. Some vehicle makes and models may require multiple drive cycles with a failure detected before the service engine light is illuminated.
Note, a P2103 code only applies to vehicles with an electronically controlled throttle body, also referred to as drive-by-wire throttle bodies.
Several problems may cause a P2103 code including:
Symptoms of a P2103 code may include:
A mechanic may use several methods to diagnose a P2103 trouble code, including: * Utilize an OBD-II scanner to check for a stored P2103 trouble code * Visually inspect wiring and related electrical components for signs of damage or corrosion * Test throttle actuator control module connector voltage and ground signals while the motor is activated * Test each individual circuit if no voltage and ground signals are present to pinpoint the location of the fault * Check CAN bus for loose, damaged or corroded electrical connections
It is recommended to always diagnose and troubleshoot diagnostic trouble codes in the order in which they appear, as codes further down the list may simply be a symptom of a code higher up.
Because a vehicle’s safe driving operation most likely will be impacted due to faults that store a P2103 code, this code is considered a potentially serious code. When this code appears, it is recommended to immediately take your vehicle to your local service center or mechanic for repair and diagnosis.
Several repairs can fix a P2103 trouble code and include:
Due to the number of possible places a fault can occur, it is recommended to have the testing of the electrical system and any repairs related to the CAN bus handled by a professional to avoid causing additional damage.
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