Engine-Codes.com
Engine-Codes – Buick – P2102 Buick

P2102 Buick Code - Throttle Actuator Control Motor Control Circuit Low Voltage

Quick Answer

The P2102 Buick trouble code indicates a problem with the Throttle Actuator Control (TAC) motor control circuit, specifically a low voltage condition. Common causes include Damaged wiring or connectors in the TAC motor control circuit, Faulty TAC motor, Malfunctioning PCM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2102 Buick indicates Throttle Actuator Control Motor Control Circuit Low Voltage.
Common causes
Common causes include Damaged wiring or connectors in the TAC motor control circuit, Faulty TAC motor, Malfunctioning PCM.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P2102 Buick Description

The P2102 Buick trouble code indicates a problem with the Throttle Actuator Control (TAC) motor control circuit, specifically a low voltage condition. The TAC system is responsible for controlling the throttle opening in response to driver input. When this code is triggered, it means that the powertrain control module (PCM) has detected that the voltage in the circuit is lower than the expected value, which can result in poor engine performance and drivability issues.

OBDII Code P2102 Buick - Throttle Actuator Control Motor Control Circuit Low Voltage
P2102 Buick Code - Throttle Actuator Control Motor Control Circuit Low Voltage

Common Causes of P2102 Buick

  1. Damaged wiring or connectors in the TAC motor control circuit
  2. Faulty TAC motor
  3. Malfunctioning PCM
  4. Issues with the throttle position sensor

Symptoms of P2102 Buick

  1. Reduced engine power
  2. Hesitation or stalling while driving
  3. Rough idling
  4. Poor acceleration

How to Fix P2102 Buick

  1. Perform a visual inspection of the TAC motor control circuit, checking for any damaged wiring or connectors. Repair or replace any damaged components.
  2. Test the TAC motor for proper operation and replace it if necessary.
  3. Check the PCM for any fault codes and perform a relearn procedure if required.
  4. Inspect the throttle position sensor for any issues and replace it if needed.
  5. Clear the trouble code from the PCM memory and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2102 Buick

The typical repair costs for addressing a P2102 Buick trouble code can vary depending on the specific cause of the issue. In general, parts for this repair could range from $100 to $300, while labor costs could range from $100 to $200. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to inquire with local shops for a more accurate estimate based on your vehicle make and model.

Need more information about the P2102 Buick code?

Need more information on how to fix the P2102 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2102 Buick code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2102 Buick Code

1. What does OBDII code P2102 mean for a Buick?

P2102 indicates a problem with the throttle actuator control motor circuit, specifically that it is experiencing low voltage.

2. What are common symptoms of code P2102 in a Buick?

Symptoms may include reduced engine power, poor acceleration, a Check Engine Light, or the vehicle entering "limp mode."

3. What causes the P2102 code to trigger?

Common causes include a faulty throttle actuator motor, damaged wiring or connectors in the circuit, a malfunctioning throttle body, or a failing engine control module (ECM).

4. Can a dirty throttle body cause P2102?

Yes, a dirty or sticking throttle body can affect the throttle actuator motor's function and trigger this code.

5. How do you diagnose code P2102 in a Buick?

Diagnosis involves checking the throttle actuator motor, inspecting wiring and connectors for damage or corrosion, and testing the voltage and continuity of the circuit.

6. Can you drive a Buick with code P2102?

Driving with P2102 is not recommended, as it can lead to reduced engine performance and potentially unsafe driving conditions.

7. How is P2102 fixed in a Buick?

Repairs may include replacing the throttle actuator motor, cleaning or replacing the throttle body, repairing damaged wiring, or, in rare cases, replacing the ECM.

8. How much does it cost to fix P2102 on a Buick?

Repair costs can vary but typically range from $150 to $700, depending on whether the throttle body or actuator motor needs replacement.

9. Does a software update fix P2102 in some cases?

Yes, in some cases, a software update for the ECM may resolve issues related to P2102 if the problem stems from software-related throttle control errors.

10. Can a dead battery cause P2102 to appear?

A low or dead battery can cause voltage issues that might trigger P2102, so it's important to check the battery and charging system as part of the diagnosis.

Discuss the causes and fixes for P2102 Buick OBDII Code

Submit a New Comment

Code P2102 Buick comments

No comments found for this page.