Engine-Codes.com
Engine-Codes – GMC – P219B 2018 GMC Sierra

P219B 2018 GMC Sierra Code - Fuel Trim Cylinder Balance Bank 2

Quick Answer

The P219B diagnostic trouble code (DTC) for a 2018 GMC Sierra 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 on bank 2, Vacuum leak on bank 2, Clogged fuel injectors on bank 2. 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 2018 GMC Sierra indicates Fuel Trim Cylinder Balance Bank 2.
Common causes
Common causes include Faulty oxygen sensor on bank 2, Vacuum leak on bank 2, Clogged fuel injectors on bank 2.
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 18, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P219B 2018 GMC Sierra Description

The P219B diagnostic trouble code (DTC) for a 2018 GMC Sierra 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 is a term used to describe the adjustment of the air-fuel mixture that the engine control module (ECM) makes to maintain proper combustion. When the ECM detects that the fuel trim on bank 2 is not balanced, it triggers the P219B code.

OBDII Code P219B 2018 GMC Sierra - Fuel Trim Cylinder Balance Bank 2
P219B 2018 GMC Sierra Code - Fuel Trim Cylinder Balance Bank 2

Common Causes of P219B 2018 GMC Sierra

  1. Faulty oxygen sensor on bank 2
  2. Vacuum leak on bank 2
  3. Clogged fuel injectors on bank 2
  4. Fuel delivery issue on bank 2
  5. ECM software issue

Symptoms of P219B 2018 GMC Sierra

  1. Decreased fuel efficiency
  2. Engine misfires
  3. Rough idling
  4. Loss of engine power
  5. Check Engine Light illuminated

How to Fix P219B 2018 GMC Sierra

  1. Use a scan tool to read and record freeze frame data and clear the DTC.
  2. Inspect the oxygen sensor on bank 2 for proper operation and replace if necessary.
  3. Check for vacuum leaks on bank 2 and repair as needed.
  4. Clean or replace clogged fuel injectors on bank 2.
  5. Test the fuel delivery system on bank 2 for proper pressure and flow.

Cost to Fix P219B 2018 GMC Sierra

The typical repair costs for addressing a P219B code on a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as an oxygen sensor, fuel injectors, or vacuum hoses can range from $100 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour. The total cost of repairs could therefore range from $200 to $1000 or more, depending on the extent of the issue and the parts needed. It is advisable to consult with a qualified mechanic to get an accurate estimate based on the specific circumstances of the vehicle.

What does this mean?

Tech Notes for P219B 2018 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.

Need more information about the P219B 2018 GMC Sierra code?

Need more information on how to fix the P219B 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P219B 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 2018 GMC Sierra Code

1. What does OBDII code P219B for a 2018 GMC Sierra indicate?

This code refers to "Fuel Trim Cylinder Balance Bank 2" and suggests an imbalance in fuel mixture delivery to the cylinders on bank 2 of the engine.

2. What are common symptoms of OBDII code P219B in a 2018 GMC Sierra?

Common symptoms include rough idling, decreased fuel efficiency, engine misfires, and potential stalling issues.

3. What are the possible causes of OBDII code P219B in a 2018 GMC Sierra?

Causes may include a vacuum leak, faulty oxygen sensor, fuel pressure regulator issues, a clogged fuel injector, or a problem with the mass airflow sensor.

4. How can I diagnose the OBDII code P219B in my 2018 GMC Sierra?

Diagnosis involves using an OBDII scanner to retrieve the code, performing a visual inspection for leaks, checking the oxygen sensor and fuel injectors, and testing the fuel pressure regulator.

5. What are the recommended repair tips for OBDII code P219B in a 2018 GMC Sierra?

Repair tips may involve repairing any vacuum leaks, replacing a faulty oxygen sensor, cleaning or replacing clogged fuel injectors, addressing fuel pressure regulator issues, or fixing problems with the mass airflow sensor.

6. Can I continue driving my 2018 GMC Sierra with OBDII code P219B?

It is not recommended to drive your vehicle with this code present, as it can lead to further engine damage and potential safety hazards. It's best to address the issue promptly.

7. How much does it typically cost to repair OBDII code P219B in a 2018 GMC Sierra?

The cost of repairs can vary based on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, depending on the extent of the problem.

8. Will resetting the OBDII code P219B in my 2018 GMC Sierra make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. The problem must be diagnosed and repaired to prevent the code from reoccurring.

9. Can a DIY enthusiast fix OBDII code P219B in a 2018 GMC Sierra?

Depending on the individual's skills and access to tools, some DIY enthusiasts may be able to address simpler causes of this code, such as replacing an oxygen sensor. However, more complex issues may require professional assistance.

10. How often does OBDII code P219B occur in a 2018 GMC Sierra?

The frequency of this code occurrence can vary depending on factors such as vehicle maintenance, driving habits, and environmental conditions. If properly maintained, it may not occur frequently.

Discuss the causes and fixes for P219B 2018 GMC Sierra OBDII Code

Submit a New Comment

Code P219B 2018 GMC Sierra comments

No comments found for this page.