AutoCodes – Buick – P151A Buick

P151A Buick Code - Throttle Actuator Control Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Throttle Actuator Control (TAC) Module, Throttle Actuator Control Module harness is open or shorted, Throttle Actuator Control Module circuit poor electrical connection. 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: P151A Buick indicates Throttle Actuator Control Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Throttle Actuator Control (TAC) Module, Throttle Actuator Control Module harness is open or shorted, Throttle Actuator Control Module circuit poor electrical connection.
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.

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Code Popularity 431

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 28, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P151A Buick Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Throttle Actuator Control (TAC) Signal Message Counter is Incorrect.

OBDII Code P151A Buick - Throttle Actuator Control Signal Message Counter Incorrect - AutoCodes.com — P151A Buick Code - Throttle Actuator Control Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P151A Buick?

Faulty Throttle Actuator Control (TAC) Module
Throttle Actuator Control Module harness is open or shorted
Throttle Actuator Control Module circuit poor electrical connection

How to Fix the DTC P151A Buick?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P151A Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.

Frequently Asked Questions about P151A Buick Code

1. What are the common symptoms of OBDII code P151A in a Buick related to the Throttle Actuator Control Signal Message Counter Incorrect?

- Common symptoms may include engine hesitation, rough idling, reduced acceleration, and possible stalling.

2. What are the potential causes of the P151A error code in a Buick?

- The code P151A in a Buick is typically caused by issues with the throttle actuator control system, such as a faulty throttle actuator, wiring problems, or a malfunctioning electronic control module.

3. How can I diagnose the OBDII code P151A in my Buick?

- Diagnosing the P151A code involves using an OBDII scanner to retrieve the code, checking the throttle actuator for proper operation, inspecting the wiring for any damage, and testing the electronic control module.

4. Can I continue driving my Buick with the P151A error code present?

- It is not recommended to drive your Buick with the P151A code active, as it can lead to poor engine performance and potentially unsafe driving conditions. It's best to address the issue promptly.

5. Are there any simple repairs I can attempt to fix the P151A error code in my Buick?

- Simple repairs may include checking and cleaning the throttle body, inspecting the wiring connections for any loose or damaged wires, and ensuring the throttle actuator is functioning correctly.

6. How much does it typically cost to repair the P151A error code in a Buick?

- The cost of repairing the P151A code in a Buick can vary depending on the specific cause of the issue. It may range from a few hundred dollars for minor repairs to over a thousand dollars for more complex issues.

7. Can I reset the P151A error code in my Buick by disconnecting the battery?

- While disconnecting the battery may temporarily clear the error code, it is not a recommended method for resolving the underlying issue causing the P151A code. It's best to properly diagnose and repair the problem.

8. Is the OBDII code P151A specific to Buick vehicles only?

- The OBDII code P151A related to the Throttle Actuator Control Signal Message Counter Incorrect can appear in various vehicle makes and models, not just limited to Buick.

9. How can I prevent the OBDII code P151A from recurring in my Buick?

- Regular maintenance, such as keeping the throttle body clean, checking for wiring issues, and addressing any engine performance problems promptly, can help prevent the recurrence of the P151A error code in your Buick.

10. Should I seek professional help to repair the P151A error code in my Buick?

- Due to the complexity of diagnosing and repairing issues related to the throttle actuator control system, it is advisable to seek assistance from a qualified mechanic or dealership to properly address the P151A error code in your Buick.