The P2103: Throttle Actuator ‘A’ Control Motor Circuit High fault code indicates that the voltage in the throttle actuator control motor circuit is higher than expected. This can affect throttle control, leading to engine performance issues. The problem could be due to high voltage in the circuit, a faulty throttle actuator motor, or wiring issues.
P2103 – Quick Overview
Code | Information |
---|---|
Meaning | P2103: Throttle Actuator ‘A’ Control Motor Circuit High |
Is it serious? | Yes, high voltage can cause improper throttle control, leading to poor engine performance and drivability issues. |
Possible causes | – High voltage in the throttle actuator control motor circuit – Faulty throttle actuator motor – Wiring issues |
How to diagnose? | – Measure voltage in the throttle actuator control motor circuit – Test the throttle actuator motor – Inspect wiring for issues |
P2103 Meaning
The P2103 fault code indicates that the throttle actuator control motor is experiencing higher-than-expected voltage, which may cause the actuator to malfunction. This can lead to poor throttle response and affect the engine’s ability to regulate power properly. The issue could stem from faulty wiring, a malfunctioning throttle actuator motor, or electrical problems in the circuit.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to check for additional related codes that may give more details about the high voltage issue in the throttle actuator circuit. | OBD-II Scanner |
Measure Voltage in the Throttle Actuator Control Motor Circuit | Use a multimeter to measure the voltage in the throttle actuator control motor circuit and compare it to manufacturer specifications to identify high voltage. | Multimeter |
Test the Throttle Actuator Motor | Use a diagnostic tool to test the functionality of the throttle actuator motor, ensuring it operates correctly and is not receiving too much voltage. | Diagnostic Tool, Multimeter |
Inspect Wiring for Issues | Visually inspect the wiring for signs of damage, loose connections, or corrosion that could be contributing to the high voltage. Test for continuity as needed. | Flashlight, Multimeter |
Repair or Replace Faulty Components | If high voltage, a faulty throttle actuator motor, or wiring issues are identified, repair or replace the necessary components to restore proper voltage levels. | Replacement Parts, Tools |
Clear the Code and Test Drive | After repairs are made, clear the code using an OBD-II scanner and test drive the vehicle to ensure the problem has been resolved. | OBD-II Scanner, Vehicle Manual |
Recheck for Codes | After the test drive, rescan the vehicle to ensure the P2103 code does not return. | OBD-II Scanner |

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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)