AutoCodes – Ford – P2099 2011 Ford Fusion

P2099 2011 Ford Fusion Code - Post Catalyst Fuel Trim System Too Rich Bank 2

Quick Answer

The Powertrain Control Module (PCM) monitors the correction value from downstream Heated Oxygen Sensor (HO2S) as part of the fore-aft oxygen sensor control routine. Common causes include Faulty Heated Oxygen Sensor, Heated Oxygen Sensor harness is open or shorted, Heated Oxygen Sensor circuit poor electrical connection. 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 2011 Ford Fusion indicates Post Catalyst Fuel Trim System Too Rich Bank 2.
Common causes: Common causes include Faulty Heated Oxygen Sensor, Heated Oxygen Sensor harness is open or shorted, Heated Oxygen Sensor circuit poor electrical connection.
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 3,871

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P2099 2011 Ford Fusion Description

The Powertrain Control Module (PCM) monitors the correction value from downstream Heated Oxygen Sensor (HO2S) as part of the fore-aft oxygen sensor control routine. The test fails when correction value is greater than a calibrated limit.

OBDII Code P2099 2011 Ford Fusion - Post Catalyst Fuel Trim System Too Rich Bank 2 - AutoCodes.com — P2099 2011 Ford Fusion Code - Post Catalyst Fuel Trim System Too Rich Bank 2

What does this mean?

What are the Possible Causes of the DTC P2099 2011 Ford Fusion?

Faulty Heated Oxygen Sensor
Heated Oxygen Sensor harness is open or shorted
Heated Oxygen Sensor circuit poor electrical connection
Exhaust leaks
Contaminated Heated Oxygen Sensor

How to Fix the DTC P2099 2011 Ford Fusion?

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 does this mean?

Code Tech Notes

Before replacing the Heated Oxygen Sensor, inspect the sensor connector for signs of damage, water ingress, or corrosion

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2099 2011 Ford Fusion 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.

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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 P2099 2011 Ford Fusion Code

1. What are the common symptoms of an OBDII code P2099 in a 2011 Ford Fusion?

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

2. What does the OBDII code P2099 "Post Catalyst Fuel Trim System Too Rich Bank 2" mean in a 2011 Ford Fusion?

- This code indicates that the fuel system on Bank 2 is running too rich after the catalytic converter.

3. What are the possible causes of the OBDII code P2099 in a 2011 Ford Fusion?

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

4. How can I diagnose the OBDII code P2099 in my 2011 Ford Fusion?

- Diagnosing the code typically involves using an OBDII scanner to read the code, checking the oxygen sensor readings, inspecting the fuel injectors, and looking for any visible signs of damage or leaks.

5. Can I continue driving my 2011 Ford Fusion with an OBDII code P2099?

- It is not recommended to continue driving with this code present, as it can lead to poor engine performance and potential damage to the catalytic converter.

6. How can I repair the OBDII code P2099 in my 2011 Ford Fusion?

- Repairs may involve replacing the oxygen sensor, cleaning or replacing the fuel injectors, repairing any vacuum leaks, replacing the air filter, or addressing issues with the catalytic converter.

7. Will resetting the check engine light fix the OBDII code P2099 in a 2011 Ford Fusion?

- Simply resetting the check engine light will not fix the underlying issue causing the code. It is important to diagnose and repair the problem to prevent it from reoccurring.

8. Is it possible to prevent the OBDII code P2099 from appearing in my 2011 Ford Fusion?

- Regular maintenance, such as replacing the air filter and ensuring the fuel system is clean, can help prevent issues that may trigger this code.

9. How long does it typically take to repair the OBDII code P2099 in a 2011 Ford Fusion?

- The repair time can vary depending on the specific cause of the code, but it may take anywhere from a few hours to a day to complete the necessary repairs.

10. Can a DIY enthusiast fix the OBDII code P2099 in a 2011 Ford Fusion?

- Depending on the level of experience and access to tools, some DIY enthusiasts may be able to address simpler causes of the code, such as replacing the air filter. However, more complex issues may require professional assistance.