AutoCodes – GMC – P10B8 2015 GMC Sierra

P10B8 2015 GMC Sierra Code - Mass Air Flow Sensor Barometric Pressure 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: P10B8 2015 GMC Sierra indicates Mass Air Flow Sensor Barometric Pressure 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 147

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 26, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P10B8 2015 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 Barometric Pressure Sensor Signal Message Counter Incorrect Bank 2.

OBDII Code P10B8 2015 GMC Sierra - Mass Air Flow Sensor Barometric Pressure Sensor Signal Message Counter Incorrect Bank 2 - AutoCodes.com — P10B8 2015 GMC Sierra Code - Mass Air Flow Sensor Barometric Pressure Sensor Signal Message Counter Incorrect Bank 2

What does this mean?

What are the Possible Causes of the DTC P10B8 2015 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 P10B8 2015 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 P10B8 2015 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 P10B8 2015 GMC Sierra code?

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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 P10B8 2015 GMC Sierra Code

1. What does the OBDII code P10B8 mean on a 2015 GMC Sierra?

P10B8 indicates an issue with the signal message counter for the Mass Air Flow (MAF) Sensor or Barometric Pressure Sensor on Bank 2, where the signal is out of sync or incorrect.

2. What are the common symptoms of code P10B8 in a GMC Sierra?

Symptoms may include poor engine performance, reduced fuel efficiency, rough idling, and possible illumination of the check engine light.

3. What causes the P10B8 code to appear?

Possible causes include a faulty MAF sensor, a malfunctioning barometric pressure sensor, wiring or connector issues, or a problem with the vehicleâ€™s powertrain control module (PCM).

4. How do I diagnose the P10B8 code in my 2015 GMC Sierra?

Begin by checking the wiring and connectors for damage or corrosion, inspecting the MAF sensor and barometric pressure sensor, and using a scan tool to monitor live data for irregularities.

5. Can a dirty Mass Air Flow sensor trigger the P10B8 code?

Yes, a dirty or contaminated MAF sensor can result in inaccurate readings, potentially triggering the P10B8 code.

6. How do I fix the P10B8 code on my GMC Sierra?

Repairs may include cleaning or replacing the MAF sensor, checking and repairing wiring connections, replacing the barometric pressure sensor, or reprogramming/updating the PCM if necessary.

7. Is it safe to drive with the P10B8 code active?

Driving with this code active is not recommended, as it can lead to poor engine performance and potential long-term damage if left unaddressed.

8. What tools are needed to troubleshoot the P10B8 code?

Tools may include an OBDII scanner, a multimeter for testing electrical connections, and possibly MAF sensor cleaner.

9. Can a software update fix the P10B8 code?

In some cases, a PCM software update may resolve communication or signal issues causing the P10B8 code.

10. How much does it typically cost to repair the P10B8 code on a 2015 GMC Sierra?

Repair costs can vary but generally range from $100 to $400, depending on whether the MAF sensor, barometric sensor, or wiring needs repair or replacement.