AutoCodes – GMC – P2098 2014 GMC Sierra

P2098 2014 GMC Sierra Code - Post Catalyst Fuel Trim System Low Limit Bank 2

Quick Answer

Fuel trim bias is used to keep the post catalyst air/fuel ratio within a predetermined range. Common causes include Air intake duct collapsed or restricted, Air filter dirty or restricted, Objects blocking the throttle body. 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: P2098 2014 GMC Sierra indicates Post Catalyst Fuel Trim System Low Limit Bank 2.
Common causes: Common causes include Air intake duct collapsed or restricted, Air filter dirty or restricted, Objects blocking the throttle body.
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 215

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 08, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2098 2014 GMC Sierra Description

Fuel trim bias is used to keep the post catalyst air/fuel ratio within a predetermined range. This allows optimal catalyst efficiency under various operating conditions. The Engine Control Module (ECM) constantly monitors how lean or rich the fuel trim bias is commanded, to determine if the fuel trim bias is greater than a calibrated amount. The Diagnostic Trouble Code (DTC) will be set when the correction limit for a condition causing a rich or lean air/fuel ratio has been exceeded.

OBDII Code P2098 2014 GMC Sierra - Post Catalyst Fuel Trim System Low Limit Bank 2 - AutoCodes.com — P2098 2014 GMC Sierra Code - Post Catalyst Fuel Trim System Low Limit Bank 2

What does this mean?

What are the Possible Causes of the DTC P2098 2014 GMC Sierra?

Air filter dirty or restricted
Objects blocking the throttle body
Excessive fuel in the crankcase. Change engine oil as necessary
Rich fuel injectors
Excessive fuel system pressure
Fuel contamination
Fuel saturation of the evaporative emissions (EVAP) canister
Stuck open or leaking EVAP purge valve
Restricted exhaust
Improper operation of the crankcase ventilation system

How to Fix the DTC P2098 2014 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 P2098 2014 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 P2098 2014 GMC Sierra code?

Need more information on how to fix the P2098 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2098 2014 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 P2098 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P2098 on a 2014 GMC Sierra?

- Common symptoms include reduced fuel efficiency, rough idling, and the illumination of the check engine light.

2. What does the OBDII code P2098 "Post Catalyst Fuel Trim System Low Limit Bank 2" mean for a 2014 GMC Sierra?

- This code indicates that the fuel system on bank 2 is operating at a lower trim level than expected after the catalytic converter.

3. What are the possible causes of OBDII code P2098 on a 2014 GMC Sierra?

- Causes may include a faulty oxygen sensor, exhaust leaks, issues with the catalytic converter, or a problem with the fuel system.

4. How can I diagnose OBDII code P2098 on my 2014 GMC Sierra?

- Diagnosis typically involves using an OBDII scanner to read the code, inspecting the oxygen sensors, checking for exhaust leaks, and testing the catalytic converter.

5. Can driving with OBDII code P2098 on a 2014 GMC Sierra cause further damage?

- Continued driving with this code may lead to decreased fuel efficiency and potential damage to the catalytic converter over time.

6. How can I repair OBDII code P2098 on my 2014 GMC Sierra?

- Repair options may include replacing the oxygen sensor, fixing any exhaust leaks, addressing catalytic converter issues, or troubleshooting the fuel system.

7. Is it safe to continue driving my 2014 GMC Sierra with the check engine light on due to code P2098?

- It is recommended to address the underlying issue causing the code as soon as possible to prevent potential damage and ensure optimal vehicle performance.

8. Can a DIY enthusiast fix OBDII code P2098 on a 2014 GMC Sierra, or is professional help necessary?

- While some repairs for this code can be done by a DIY enthusiast, complex issues with the fuel system or catalytic converter may require professional assistance.

9. How much does it typically cost to repair OBDII code P2098 on a 2014 GMC Sierra?

- The cost of repairs can vary depending on the underlying cause, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Are there any preventative maintenance tips to avoid OBDII code P2098 on a 2014 GMC Sierra in the future?

- Regularly scheduled maintenance, such as replacing oxygen sensors at recommended intervals, checking for exhaust leaks, and using high-quality fuel, can help prevent this code from reoccurring.