The P2102: Throttle Actuator ‘A’ Control Motor Circuit Low fault code indicates that the voltage in the throttle actuator control motor circuit is lower than expected. This may lead to improper throttle control and impact engine performance. The issue could be due to low voltage in the circuit, a faulty throttle actuator motor, or wiring problems.
P2102 – Quick Overview
Code | Information |
---|---|
Meaning | P2102: Throttle Actuator ‘A’ Control Motor Circuit Low |
Is it serious? | Yes, low voltage can cause the throttle actuator to malfunction, leading to poor throttle response and engine performance issues. |
Possible causes | – Low 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 |
P2102 Meaning
The P2102 fault code indicates that the voltage in the throttle actuator control motor circuit is below the required level for proper operation. This can result in the throttle actuator failing to control the throttle valve, which affects engine performance and responsiveness. The issue could be caused by low voltage due to wiring problems or a failing throttle actuator motor.
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 provide further context about the throttle actuator system. | OBD-II Scanner |
Measure Voltage in the Throttle Actuator Control Motor Circuit | Use a multimeter to measure the voltage in the throttle actuator motor circuit and compare it to manufacturer specifications to identify low voltage. | Multimeter |
Test the Throttle Actuator Motor | Use a diagnostic tool to test the throttle actuator motor and ensure it operates correctly and is not the cause of the low voltage condition. | Diagnostic Tool, Multimeter |
Inspect Wiring for Issues | Visually inspect the wiring for signs of damage, loose connections, or corrosion that could be causing the low voltage. Test for continuity if necessary. | Flashlight, Multimeter |
Repair or Replace Faulty Components | If a faulty throttle actuator motor or damaged wiring is found, repair or replace the affected components to restore proper voltage in the circuit. | Replacement Parts, Tools |
Clear the Code and Test Drive | After completing repairs, clear the fault code using an OBD-II scanner and test drive the vehicle to ensure the issue is resolved. | OBD-II Scanner, Vehicle Manual |
Recheck for Codes | After the test drive, rescan the vehicle to ensure the P2102 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)