AutoCodes – Chevrolet – P151A 2016 Chevrolet Silverado

P151A 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado 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 247

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado - Throttle Actuator Control Signal Message Counter Incorrect - AutoCodes.com — P151A 2016 Chevrolet Silverado Code - Throttle Actuator Control Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P151A 2016 Chevrolet Silverado?

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 2016 Chevrolet Silverado?

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 2016 Chevrolet Silverado 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.

Need more information about the P151A 2016 Chevrolet Silverado code?

Need more information on how to fix the P151A 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2016 Chevrolet Silverado Code

1. What does OBDII code P151A mean for a 2016 Chevrolet Silverado?

The code P151A indicates that the Throttle Actuator Control System has detected an incorrect signal message counter.

2. What are the common symptoms of OBDII code P151A in a 2016 Chevrolet Silverado?

Common symptoms of code P151A may include rough idling, reduced engine power, and the Check Engine Light illuminating on the dashboard.

3. What are the possible causes of OBDII code P151A in a 2016 Chevrolet Silverado?

Possible causes of code P151A include a faulty throttle actuator, damaged wiring or connectors in the throttle control system, or a malfunctioning powertrain control module (PCM).

4. How can I diagnose OBDII code P151A in my 2016 Chevrolet Silverado?

Diagnosing code P151A usually involves using a scan tool to retrieve the specific code, checking the throttle actuator and related components for faults, and inspecting wiring for any damage.

5. Can I still drive my 2016 Chevrolet Silverado with OBDII code P151A?

It is not recommended to drive your vehicle with code P151A as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P151A in my 2016 Chevrolet Silverado?

Repairing code P151A may involve replacing the faulty throttle actuator, repairing damaged wiring or connectors, or reprogramming the PCM to correct the signal message counter issue.

7. Is it necessary to reset the OBDII code P151A after repairing my 2016 Chevrolet Silverado?

After repairing the issue causing code P151A, it is advisable to clear the code using a scan tool. This will reset the Check Engine Light and monitor the system for any recurring issues.

8. Can a DIY enthusiast fix OBDII code P151A in a 2016 Chevrolet Silverado?

While some aspects of diagnosing and repairing code P151A can be done by a DIY enthusiast with the right tools and knowledge, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

9. How much does it cost to repair OBDII code P151A in a 2016 Chevrolet Silverado?

The cost of repairing code P151A can vary depending on the specific cause of the issue, parts needed for replacement, and labor costs. It's best to get a quote from a trusted mechanic.

10. How can I prevent OBDII code P151A from occurring in my 2016 Chevrolet Silverado?

To prevent code P151A, it's important to perform regular maintenance on your vehicle, address any throttle-related issues promptly, and ensure proper care of the throttle control system components.