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Engine-Codes – GMC – P219B 2016 GMC Sierra

P219B 2016 GMC Sierra Code - Fuel Trim Cylinder Balance Bank 2

Quick Answer

The P219B diagnostic trouble code (DTC) for a 2016 GMC Sierra specifically refers to "Fuel Trim Cylinder Balance Bank 2." This code indicates that there is an imbalance in the fuel mixture being delivered to the cylinders on bank 2 of the engine. Common causes include Faulty oxygen sensor, Vacuum leak, Clogged fuel injector. 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 2016 GMC Sierra indicates Fuel Trim Cylinder Balance Bank 2.
Common causes
Common causes include Faulty oxygen sensor, Vacuum leak, Clogged fuel injector.
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 13, 2024
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Code P219B 2016 GMC Sierra Description

The P219B diagnostic trouble code (DTC) for a 2016 GMC Sierra specifically refers to "Fuel Trim Cylinder Balance Bank 2." This code indicates that there is an imbalance in the fuel mixture being delivered to the cylinders on bank 2 of the engine. The fuel trim values are used by the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When the ECM detects that the fuel trim values are outside of the specified range, it triggers the P219B code.

OBDII Code P219B 2016 GMC Sierra - Fuel Trim Cylinder Balance Bank 2
P219B 2016 GMC Sierra Code - Fuel Trim Cylinder Balance Bank 2

Common Causes of P219B 2016 GMC Sierra

  1. Faulty oxygen sensor
  2. Vacuum leak
  3. Clogged fuel injector
  4. Malfunctioning fuel pressure regulator
  5. Problem with the mass airflow sensor

Symptoms of P219B 2016 GMC Sierra

  1. Poor fuel economy
  2. Reduced engine power
  3. Rough idling
  4. Hesitation or stumbling during acceleration
  5. Engine misfires

How to Fix P219B 2016 GMC Sierra

  1. Diagnose the issue by using a scan tool to read the DTC and monitor live data to pinpoint the source of the problem.
  2. Inspect the oxygen sensor, vacuum lines, fuel injectors, fuel pressure regulator, and mass airflow sensor for any signs of damage or malfunction.
  3. Replace any faulty components identified during the diagnostic process.
  4. Clear the DTC and reset the ECM to see if the issue has been resolved.
  5. Test drive the vehicle to ensure that the symptoms associated with the P219B code have been eliminated.

Cost to Fix P219B 2016 GMC Sierra

The typical repair costs for addressing a P219B code can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the cost of replacing components such as an oxygen sensor, fuel injector, or mass airflow sensor can range from $200 to $500 per part. Labor costs can add an additional $100 to $300 per hour, depending on the shop's rates and the complexity of the repair. Overall, the total cost for resolving a P219B code can range from $300 to $1000 or more, depending on the extent of the repairs needed. It's advisable to consult with a qualified mechanic or auto repair shop to get a more accurate estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for P219B 2016 GMC Sierra

The fuel trim cylinder balance diagnostic is sensitive to the heated oxygen sensor (HO2S) design. A non-factory sensor or an incorrect part number may set a false DTC. Monitoring the misfire current counters, or misfire graph may help to isolate the cylinder that is causing the condition.

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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 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P219B in a 2016 GMC Sierra related to Fuel Trim Cylinder Balance Bank 2?

- Common symptoms include rough idling, decreased fuel efficiency, engine misfires, and a noticeable drop in performance.

2. What are the possible causes of OBDII code P219B in a 2016 GMC Sierra indicating Fuel Trim Cylinder Balance Bank 2 issues?

- Potential causes include a faulty oxygen sensor, vacuum leaks, fuel injector problems, an exhaust leak, or issues with the engine's air intake system.

3. How can I diagnose the OBDII code P219B in a 2016 GMC Sierra for Fuel Trim Cylinder Balance Bank 2 problems?

- Use a diagnostic scanner to retrieve the trouble codes, check for any related codes, inspect the oxygen sensor, look for vacuum leaks, and test the fuel injectors.

4. Are there any DIY repair tips for addressing OBDII code P219B in a 2016 GMC Sierra linked to Fuel Trim Cylinder Balance Bank 2?

- DIY repair tips include checking and replacing the oxygen sensor, inspecting and repairing any vacuum leaks, cleaning or replacing fuel injectors, and ensuring tight connections in the intake system.

5. Can driving with OBDII code P219B in a 2016 GMC Sierra indicating Fuel Trim Cylinder Balance Bank 2 issues cause further damage?

- Continuing to drive with this code may lead to decreased engine performance, increased fuel consumption, and potential damage to the catalytic converter or other engine components.

6. How much does it typically cost to repair OBDII code P219B in a 2016 GMC Sierra related to Fuel Trim Cylinder Balance Bank 2?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500 for parts and labor.

7. Is it safe to ignore OBDII code P219B in a 2016 GMC Sierra associated with Fuel Trim Cylinder Balance Bank 2 problems?

- Ignoring this code can lead to poor engine performance and increased fuel consumption, so it is not recommended to ignore it for an extended period.

8. Can a simple reset of the OBDII system clear the P219B code in a 2016 GMC Sierra related to Fuel Trim Cylinder Balance Bank 2?

- A simple reset may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear after driving the vehicle again.

9. How long does it take to repair OBDII code P219B in a 2016 GMC Sierra indicating Fuel Trim Cylinder Balance Bank 2 problems?

- The repair time can vary based on the specific cause of the issue and the complexity of the repair needed, but it may take a few hours to a full day at a repair shop.

10. Can a mechanic easily fix OBDII code P219B in a 2016 GMC Sierra related to Fuel Trim Cylinder Balance Bank 2, or does it require specialized knowledge?

- A mechanic with experience in engine diagnostics and repair should be able to address this code effectively, as it may involve troubleshooting various components of the fuel and air systems.

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