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P14B6 2017 GMC Sierra Code - Mass Air Flow Sensor Signal Message Counter Incorrect

Quick Answer

The P14B6 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the Mass Air Flow (MAF) Sensor Signal Message Counter is incorrect. Common causes include Faulty MAF sensor, Dirty or contaminated MAF sensor, Damaged wiring or connectors. 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
P14B6 2017 GMC Sierra indicates Mass Air Flow Sensor Signal Message Counter Incorrect.
Common causes
Common causes include Faulty MAF sensor, Dirty or contaminated MAF sensor, Damaged wiring or connectors.
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 14, 2024
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Code P14B6 2017 GMC Sierra Description

The P14B6 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the Mass Air Flow (MAF) Sensor Signal Message Counter is incorrect. The MAF sensor plays a crucial role in the engine's operation by measuring the amount of air entering the engine to determine the correct air-fuel mixture for combustion. This information is vital for the engine control module (ECM) to adjust fuel delivery and optimize engine performance. When the ECM detects that the signal message counter from the MAF sensor is incorrect, it means that the expected number of messages from the sensor does not match the actual number received. This discrepancy can lead to inaccurate air-fuel mixture calculations, resulting in poor engine performance, reduced fuel efficiency, and potential drivability issues.

OBDII Code P14B6 2017 GMC Sierra - Mass Air Flow Sensor Signal Message Counter Incorrect
P14B6 2017 GMC Sierra Code - Mass Air Flow Sensor Signal Message Counter Incorrect

Common Causes of P14B6 2017 GMC Sierra

  1. Faulty MAF sensor
  2. Dirty or contaminated MAF sensor
  3. Damaged wiring or connectors
  4. Air leaks in the intake system
  5. Malfunctioning ECM

Symptoms of P14B6 2017 GMC Sierra

  1. Check engine light illuminated on the dashboard
  2. Rough idling or stalling
  3. Hesitation or lack of power during acceleration
  4. Reduced fuel efficiency
  5. Engine running too rich or too lean

How to Fix P14B6 2017 GMC Sierra

  1. Begin by diagnosing the issue using a scan tool to retrieve the specific DTC and monitor the MAF sensor's data.
  2. Inspect the MAF sensor for any dirt, debris, or contamination that may be affecting its performance. Clean or replace the sensor as needed.
  3. Check the wiring and connectors connected to the MAF sensor for any damage or corrosion. Repair or replace any faulty components.
  4. Inspect the intake system for air leaks that could be causing incorrect readings from the MAF sensor. Repair any leaks found.
  5. Clear the DTC and reset the ECM to see if the issue has been resolved. Test drive the vehicle to ensure proper operation and monitor for any recurring issues.

Cost to Fix P14B6 2017 GMC Sierra

The cost of repairing a P14B6 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. Typically, the cost of a new MAF sensor ranges from $100 to $400, depending on the brand and quality. Labor costs for diagnosis and repair can range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair. Overall, the total repair cost for addressing the Mass Air Flow Sensor Signal Message Counter Incorrect code can range from $200 to $700, including parts and labor. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the vehicle.

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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 P14B6 2017 GMC Sierra Code

1. What does the P14B6 code mean on a 2017 GMC Sierra?

The P14B6 code indicates an issue with the Mass Air Flow (MAF) sensor signal message counter being incorrect, which may disrupt engine performance.

2. What are the common symptoms of the P14B6 code?

Symptoms may include poor engine performance, reduced fuel efficiency, rough idling, hesitation during acceleration, or an illuminated check engine light.

3. What causes the P14B6 code to appear?

Common causes include a faulty MAF sensor, wiring or connector issues, a defective powertrain control module (PCM), or software glitches in the vehicle's computer.

4. Can a dirty air filter trigger the P14B6 code?

While a dirty air filter itself may not trigger this specific code, it can affect the MAF sensor’s performance and contribute to airflow inconsistencies.

5. How do you diagnose the P14B6 code?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the MAF sensor and its wiring, and checking for related issues like air intake leaks or PCM faults.

6. Is it safe to drive with the P14B6 code active?

Driving with this code is not recommended, as it may cause poor engine performance and lead to further damage if left unaddressed.

7. How can the P14B6 code be fixed?

Repairs may include cleaning or replacing the MAF sensor, repairing damaged wiring or connectors, updating PCM software, or replacing the PCM if necessary.

8. Can I clear the P14B6 code without fixing the issue?

Clearing the code with an OBDII scanner may temporarily turn off the check engine light, but the issue will likely return if the underlying problem isn't resolved.

9. How much does it cost to fix a P14B6 code on a 2017 GMC Sierra?

The cost can vary, ranging from $100–$300 for MAF sensor cleaning or replacement, and higher if PCM repairs or updates are needed.

10. Can a software update fix the P14B6 code?

Yes, if the issue is related to a PCM software glitch, a software update from the dealership may resolve the problem.

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