P10B8 2018 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 2018 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.
Code P10B8 2018 GMC Sierra Description
What are the Possible Causes of the DTC P10B8 2018 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 2018 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 2018 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 2018 GMC Sierra code?
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Frequently Asked Questions about P10B8 2018 GMC Sierra Code
What does the OBDII code P10B8 mean on a 2018 GMC Sierra?
P10B8 indicates an issue with the Mass Air Flow (MAF) Sensor or Barometric Pressure Sensor on Bank 2, where the signal message counter is incorrect.
What are the common symptoms of code P10B8 in a 2018 GMC Sierra?
Symptoms may include reduced engine performance, poor fuel efficiency, rough idling, and the illumination of the check engine light.
What causes the P10B8 code to appear in a 2018 GMC Sierra?
Common causes include a faulty MAF sensor, a defective barometric pressure sensor, wiring issues, or a problem with the ECM (Engine Control Module).
Can a dirty air filter cause the P10B8 code to trigger?
While a dirty air filter can indirectly affect MAF sensor readings, it is not a direct cause of the P10B8 code. However, replacing it may help improve overall performance.
How can I diagnose the P10B8 code on my 2018 GMC Sierra?
Start by checking the wiring and connectors for the MAF and barometric pressure sensors. Use a scan tool to monitor sensor data and compare it to manufacturer specifications.
Is it safe to drive with the P10B8 code in my 2018 GMC Sierra?
Driving with this code is generally not recommended, as it can lead to engine performance issues and potentially cause further damage if not addressed.
How do I fix the P10B8 code on a 2018 GMC Sierra?
Repairs may include replacing the faulty MAF or barometric pressure sensor, repairing damaged wiring, or reprogramming the ECM if necessary.
Can a software update resolve the P10B8 code on a 2018 GMC Sierra?
In some cases, a software update for the ECM may resolve the issue if the problem is related to incorrect communication between sensors.
What tools do I need to troubleshoot the P10B8 code?
You’ll need an OBDII scan tool capable of reading live data, a multimeter for checking wiring and connections, and possibly a repair manual for sensor specifications.
How much does it cost to fix the P10B8 code on a 2018 GMC Sierra?
The repair cost depends on the root cause. Replacing a MAF sensor could cost $150–$300, while fixing wiring or reprogramming the ECM may vary. Always get a professional diagnosis for accurate pricing.
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