AutoCodes – Chevrolet – P2099 2014 Chevrolet Silverado

P2099 2014 Chevrolet Silverado Code - Post Catalyst Fuel Trim System High 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 Exhaust system leaks, Split, kinked or improperly connected vacuum hoses, Insufficient fuel in the tank. 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
P2099 2014 Chevrolet Silverado indicates Post Catalyst Fuel Trim System High Limit Bank 2.
Common causes
Common causes include Exhaust system leaks, Split, kinked or improperly connected vacuum hoses, Insufficient fuel in the tank.
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 2,453
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 08, 2022
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Code P2099 2014 Chevrolet Silverado 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 P2099 2014 Chevrolet Silverado - Post Catalyst Fuel Trim System High Limit Bank 2 - AutoCodes.com
P2099 2014 Chevrolet Silverado Code - Post Catalyst Fuel Trim System High Limit Bank 2

What are the Possible Causes of the DTC P2099 2014 Chevrolet Silverado?

  • Exhaust system leaks
  • Split, kinked or improperly connected vacuum hoses
  • Insufficient fuel in the tank
  • Leaks in the air induction system and air intake ducts
  • Missing air filter element
  • Cracked evaporative canister
  • Evaporative pipes plugged, obstructed, or leaking
  • Crankcase ventilation system leaking
  • Engine vacuum leaks
  • Low fuel system pressure
  • Contaminated fuel
  • Lean fuel injectors

How to Fix the DTC P2099 2014 Chevrolet Silverado?

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 P2099 2014 Chevrolet Silverado 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 P2099 2014 Chevrolet Silverado code?

Need more information on how to fix the P2099 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2099 2014 Chevrolet Silverado 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 P2099 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2099 on a 2014 Chevrolet Silverado?

- Common symptoms include poor fuel economy, rough idling, loss of power, and the illumination of the check engine light.

2. What does the OBDII code P2099 "Post Catalyst Fuel Trim System High Limit Bank 2" mean for a 2014 Chevrolet Silverado?

- This code indicates that the fuel system on bank 2 is operating outside of the normal parameters, potentially leading to issues with fuel mixture and combustion.

3. What are some possible causes of OBDII code P2099 on a 2014 Chevrolet Silverado?

- Causes can include a faulty oxygen sensor, a vacuum leak, a clogged fuel filter, a malfunctioning catalytic converter, or issues with the fuel injectors.

4. How can I diagnose the OBDII code P2099 on my 2014 Chevrolet Silverado?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the code, checking for any other related codes, inspecting the oxygen sensors, and looking for any visible signs of damage or leaks in the fuel system.

5. Can I drive my 2014 Chevrolet Silverado with OBDII code P2099?

- It is not recommended to drive the vehicle with this code for an extended period, as it can lead to decreased fuel efficiency and potential damage to the engine or catalytic converter.

6. How can I repair OBDII code P2099 on my 2014 Chevrolet Silverado?

- Repair options can include replacing the oxygen sensor, fixing any vacuum leaks, cleaning or replacing the fuel filter, addressing catalytic converter issues, and ensuring proper functioning of the fuel injectors.

7. Is it possible to reset OBDII code P2099 on a 2014 Chevrolet Silverado?

- While you can clear the code with an OBDII scanner, it is important to address and repair the underlying issue causing the code to prevent it from reoccurring.

8. How much does it cost to fix OBDII code P2099 on a 2014 Chevrolet Silverado?

- The cost of repairs can vary depending on the specific cause of the code and the parts and labor required. It is recommended to consult a mechanic for a proper diagnosis and cost estimate.

9. Can a DIY enthusiast fix OBDII code P2099 on a 2014 Chevrolet Silverado?

- Depending on the cause of the code and the expertise of the individual, some repairs related to this code can be done by a knowledgeable DIY enthusiast with the right tools and resources.

10. How often does OBDII code P2099 occur in a 2014 Chevrolet Silverado?

- The occurrence of this specific code can vary based on driving conditions, maintenance history, and the overall health of the vehicle's fuel system. Regular maintenance can help prevent the likelihood of this code appearing.

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