AutoCodes – GMC – P14BD 2016 GMC Sierra

P14BD 2016 GMC Sierra Code - Mass Air Flow Sensor Signal Message Counter Incorrect Bank 2

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Mass Air Flow Sensor, Mass Air Flow Sensor harness is open or shorted, Mass Air Flow Sensor 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: P14BD 2016 GMC Sierra indicates Mass Air Flow Sensor Signal Message Counter Incorrect Bank 2.
Common causes: Common causes include Faulty Mass Air Flow Sensor, Mass Air Flow Sensor harness is open or shorted, Mass Air Flow Sensor 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 217

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 P14BD 2016 GMC Sierra 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 Mass Air Flow Sensor Signal Message Counter Incorrect Bank 2.

OBDII Code P14BD 2016 GMC Sierra - Mass Air Flow Sensor Signal Message Counter Incorrect Bank 2 - AutoCodes.com — P14BD 2016 GMC Sierra Code - Mass Air Flow Sensor Signal Message Counter Incorrect Bank 2

What does this mean?

What are the Possible Causes of the DTC P14BD 2016 GMC Sierra?

Faulty Mass Air Flow Sensor
Mass Air Flow Sensor harness is open or shorted
Mass Air Flow Sensor circuit poor electrical connection

How to Fix the DTC P14BD 2016 GMC Sierra?

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 P14BD 2016 GMC Sierra 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 P14BD 2016 GMC Sierra code?

Need more information on how to fix the P14BD 2016 GMC Sierra 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 P14BD 2016 GMC Sierra Code

What does the OBDII code P14BD mean on a 2016 GMC Sierra?

P14BD indicates an issue with the Mass Air Flow (MAF) sensor signal message counter on Bank 2, meaning the signal from the MAF sensor is not being processed correctly by the ECM.

What are the common symptoms of code P14BD in a 2016 GMC Sierra?

Symptoms may include reduced engine performance, poor fuel economy, rough idling, stalling, or the Check Engine Light being illuminated.

What causes the P14BD code to appear in a 2016 GMC Sierra?

Common causes include a faulty MAF sensor, damaged wiring or connectors in the MAF circuit, a dirty or clogged air filter, or a malfunctioning ECM.

How can I diagnose the P14BD code on my GMC Sierra?

Start by scanning the vehicle with an OBDII tool, inspecting the MAF sensor and its wiring for damage, checking for blockages in the air intake system, and ensuring the air filter is clean.

Can a dirty air filter cause the P14BD code?

Yes, a dirty or clogged air filter can restrict airflow, potentially causing incorrect MAF sensor readings and triggering the P14BD code.

How do I fix the P14BD code on a 2016 GMC Sierra?

Repairs may include cleaning or replacing the MAF sensor, repairing damaged wiring, replacing the air filter, or, in rare cases, reprogramming or replacing the ECM.

Can I drive my GMC Sierra with the P14BD code active?

Driving with the P14BD code is not recommended, as it may result in poor performance, increased emissions, and potential damage to the engine or catalytic converter.

How much does it cost to fix the P14BD code on a GMC Sierra?

Repair costs can vary widely, typically ranging from $50 to $400, depending on whether the issue is a simple air filter replacement, MAF sensor cleaning, or sensor replacement.

Can a software issue in the ECM cause the P14BD code?

Yes, a software glitch or outdated ECM programming can sometimes cause incorrect signal processing, leading to the P14BD code.

How can I prevent the P14BD code from recurring in my GMC Sierra?

Regular maintenance, such as replacing the air filter, ensuring the MAF sensor is clean, and inspecting the wiring for damage, can help prevent this code from reappearing.