AutoCodes – GMC – P219B 2015 GMC Sierra

P219B 2015 GMC Sierra Code - Fuel Trim Cylinder Balance Bank 2

Quick Answer

The Fuel Trim Cylinder Balance diagnostic detects a rich or lean cylinder to cylinder air/fuel ratio imbalance in each bank. Common causes include Leaking or contaminated fuel injectors, Low fuel pressure or running out of fuel, Exhaust or intake air system leaks. 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
P219B 2015 GMC Sierra indicates Fuel Trim Cylinder Balance Bank 2.
Common causes
Common causes include Leaking or contaminated fuel injectors, Low fuel pressure or running out of fuel, Exhaust or intake air system leaks.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 485
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 20, 2022
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Code P219B 2015 GMC Sierra Description

The Fuel Trim Cylinder Balance diagnostic detects a rich or lean cylinder to cylinder air/fuel ratio imbalance in each bank. The diagnostic monitors the pre-catalyst heated oxygen sensor (HO2S) signal's frequency and amplitude characteristics by calculating an accumulated voltage over a predetermined sample period. An imbalance is indicated when multiple samples of the accumulated voltage are consistently higher than the desired value.
The Diagnostic Trouble Code (DTC) will be set when multiple samples of the pre-catalyst HO2S accumulated voltage are consistently greater than the desired value.
OBDII Code P219B 2015 GMC Sierra - Fuel Trim Cylinder Balance Bank 2 - AutoCodes.com
P219B 2015 GMC Sierra Code - Fuel Trim Cylinder Balance Bank 2

What are the Possible Causes of the DTC P219B 2015 GMC Sierra?

  • Leaking or contaminated fuel injectors
  • Low fuel pressure or running out of fuel
  • Exhaust or intake air system leaks
  • Faulty Exhaust Gas Recirculation (EGR) system
  • Positive Crankcase Ventilation (PCV) system is leaking, or the valve is stuck open
  • Ignition system
  • Incorrectly seated engine oil dipstick, tube, or oil fill cap

How to Fix the DTC P219B 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P219B 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 P219B 2015 GMC Sierra code?

Need more information on how to fix the P219B 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 P219B 2015 GMC Sierra Code

1. What does OBDII code P219B on a 2015 GMC Sierra mean?

The code P219B indicates "Fuel Trim Cylinder Balance Bank 2" on a 2015 GMC Sierra.

2. What are common symptoms of OBDII code P219B on a 2015 GMC Sierra?

Common symptoms of code P219B may include rough idling, reduced engine performance, and potential fuel efficiency issues.

3. What are possible causes of OBDII code P219B on a 2015 GMC Sierra?

Causes of code P219B can include a vacuum leak, faulty oxygen sensor, fuel injector issues, or problems with the air intake system.

4. How can I diagnose OBDII code P219B on my 2015 GMC Sierra?

Diagnosing code P219B may involve using an OBDII scanner to read the code, checking for related trouble codes, inspecting the oxygen sensors, and performing a visual inspection of the intake system.

5. Can I drive my 2015 GMC Sierra with OBDII code P219B?

It is generally not recommended to drive your vehicle with an active OBDII code like P219B, as it can lead to further damage and potential safety issues.

6. How can I repair OBDII code P219B on my 2015 GMC Sierra?

Repairing code P219B may involve fixing any vacuum leaks, replacing faulty oxygen sensors, addressing fuel injector problems, or repairing issues with the air intake system.

7. Will resetting the OBDII code P219B on my 2015 GMC Sierra solve the issue?

Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing code P219B.

8. How much does it cost to repair OBDII code P219B on a 2015 GMC Sierra?

The cost of repairing code P219B can vary depending on the specific issue causing the code, parts needed for repair, and labor costs at a repair shop.

9. Can a DIY enthusiast fix OBDII code P219B on a 2015 GMC Sierra?

Some aspects of diagnosing and repairing code P219B may be manageable for experienced DIY enthusiasts, but complex issues may require professional assistance.

10. How often does OBDII code P219B occur in a 2015 GMC Sierra?

The occurrence of code P219B can vary depending on the vehicle's maintenance history, driving conditions, and overall health of the engine components.

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