Engine-CodesBuick – P1517 Buick

P1517 Buick Code - Throttle Actuator Control Module Performance

Quick Answer

The P1517 Buick code indicates a problem with the Throttle Actuator Control Module (TACM) performance. Common causes include Faulty TACM: The throttle actuator control module may be malfunctioning and needs to be replaced, Wiring issues: Damaged or corroded wiring connections can disrupt communication between the TACM and ECM, ECM failure: A malfunctioning engine control module can also trigger the P1517 code. 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
P1517 Buick indicates Throttle Actuator Control Module Performance.
Common causes
Common causes include Faulty TACM: The throttle actuator control module may be malfunctioning and needs to be replaced, Wiring issues: Damaged or corroded wiring connections can disrupt communication between the TACM and ECM, ECM failure: A malfunctioning engine control module can also trigger the P1517 code.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1517 Buick Description

The P1517 Buick code indicates a problem with the Throttle Actuator Control Module (TACM) performance. The throttle actuator control module is responsible for controlling the opening and closing of the throttle valve in the engine. It communicates with the engine control module (ECM) to regulate the amount of air entering the engine, which ultimately affects the engine's performance.

OBDII Code P1517 Buick - Throttle Actuator Control Module Performance
P1517 Buick Code - Throttle Actuator Control Module Performance

Common Causes of P1517 Buick

  1. Faulty TACM: The throttle actuator control module may be malfunctioning and needs to be replaced.
  2. Wiring issues: Damaged or corroded wiring connections can disrupt communication between the TACM and ECM.
  3. ECM failure: A malfunctioning engine control module can also trigger the P1517 code.
  4. Throttle body issues: Problems with the throttle body, such as carbon buildup or mechanical issues, can affect TACM performance.
  5. Electronic component failure: Any electronic components within the TACM system that fail can lead to this code being triggered.

Symptoms of P1517 Buick

  1. Unresponsive throttle: The vehicle may not accelerate as expected when the throttle is pressed.
  2. Rough idling: The engine may idle roughly or inconsistently.
  3. Stalling: The vehicle may stall unexpectedly, especially when coming to a stop.
  4. Decreased fuel efficiency: The vehicle may consume more fuel than usual due to improper throttle control.
  5. Check Engine Light: The check engine light may illuminate on the dashboard to indicate a problem with the throttle actuator control module.

How to Fix P1517 Buick

  1. Diagnose the problem: Use a diagnostic scanner to retrieve the trouble code and pinpoint the exact cause of the issue.
  2. Inspect wiring: Check the wiring connections for any damage or corrosion and repair or replace as necessary.
  3. Replace TACM: If the throttle actuator control module is faulty, replace it with a new unit.
  4. Clear codes: After the repair is completed, clear the trouble codes and test drive the vehicle to ensure the issue has been resolved.
  5. Perform relearn procedure: Some vehicles may require a relearn procedure to recalibrate the TACM after replacement.

Cost to Fix P1517 Buick

The cost of repairing a P1517 Buick code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing a throttle actuator control module can range from $200 to $500, including parts and labor. However, additional costs may apply if there are wiring issues or other components that need to be replaced. It's recommended to consult with a professional mechanic to get an accurate estimate for your vehicle's repair. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to check local rates for a more precise estimate.

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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.

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