Engine-Codes.com
Engine-Codes – Generic – P114C

P114C Code - Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich Bank 2

Quick Answer

The P114C code indicates that the post-catalyst fuel trim via oxygen sensor system is reading a fuel mixture that is too rich on Bank 2 of the engine. Common causes include Faulty oxygen sensor, Leaking fuel injectors, Clogged air filter. 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
P114C indicates Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich Bank 2.
Common causes
Common causes include Faulty oxygen sensor, Leaking fuel injectors, Clogged air filter.
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 11, 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 P114C Description

The P114C code indicates that the post-catalyst fuel trim via oxygen sensor system is reading a fuel mixture that is too rich on Bank 2 of the engine. This means that there is an excessive amount of fuel being delivered to the engine in relation to the amount of air. Fuel trim is a term used to describe the adjustments made by the engine control module (ECM) to the air-fuel mixture to maintain the proper ratio for optimal combustion. When the system detects that the fuel trim is too rich, it can lead to poor engine performance, reduced fuel efficiency, and increased emissions.

OBDII Code P114C - Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich Bank 2
P114C Code - Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich Bank 2

Common Causes of P114C

  1. Faulty oxygen sensor
  2. Leaking fuel injectors
  3. Clogged air filter
  4. Malfunctioning fuel pressure regulator
  5. Vacuum leaks in the intake system

Symptoms of P114C

  1. Decreased fuel efficiency
  2. Engine misfires
  3. Rough idling
  4. Check Engine Light illuminated
  5. Strong fuel odor from the exhaust

How to Fix P114C

  1. Diagnose the issue by scanning the vehicle's ECM for trouble codes and monitoring the oxygen sensor readings.
  2. Inspect the oxygen sensor for proper operation and replace if necessary.
  3. Check for fuel leaks and inspect the fuel injectors for any leaks or clogs.
  4. Clean or replace the air filter to ensure proper airflow to the engine.
  5. Test and replace the fuel pressure regulator if it is malfunctioning.

Cost to Fix P114C

The cost of repairing a P114C code can vary depending on the specific cause of the issue. On average, the cost of replacing an oxygen sensor can range from $200 to $400, while cleaning or replacing fuel injectors may cost between $100 and $500. Additional costs for labor and diagnostic fees should also be taken into account, with total repair costs potentially reaching up to $800 or more. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.

Need more information about the P114C code?

Need more information on how to fix the P114C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P114C code diagnosed by a professional: Find a repair shop in your area

Code P114C Information for Specific Makes

  • P114C BMW — Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich Bank 2
  • P114C MINI — Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich Bank 2
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 P114C Code

1. What are the common symptoms of OBDII code P114C?

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

2. What are the possible causes of OBDII code P114C?

- Potential causes include a faulty oxygen sensor, a malfunctioning catalytic converter, a vacuum leak, fuel pressure issues, or a problem with the engine's air intake system.

3. How can I diagnose OBDII code P114C?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, conducting a visual inspection of the oxygen sensor and related components, and performing tests to check the fuel trim levels.

4. Can I still drive my vehicle with OBDII code P114C?

- It is not recommended to drive your vehicle with this code active, as it can lead to further damage to the engine or emissions system. It's best to address the issue promptly.

5. How should I repair OBDII code P114C?

- Repair methods may include replacing the oxygen sensor, fixing any vacuum leaks, addressing fuel pressure issues, repairing or replacing the catalytic converter, or cleaning the engine's air intake system.

6. Are there any maintenance tips to prevent OBDII code P114C from occurring?

- Regular maintenance, such as changing the oxygen sensor at recommended intervals, keeping up with fuel system cleaning, and ensuring the engine air intake system is clean can help prevent this code from appearing.

7. Is it possible to reset OBDII code P114C without fixing the underlying issue?

- While it is possible to clear the code temporarily, the underlying issue should still be addressed to prevent further problems and potential damage to the vehicle's engine or emissions system.

8. Can a DIY enthusiast effectively fix OBDII code P114C?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by replacing the oxygen sensor or fixing minor vacuum leaks. However, more complex issues may require professional assistance.

9. Is OBDII code P114C specific to a certain vehicle make or model?

- This code can appear in various vehicle makes and models, especially those equipped with OBDII systems. However, the specific repair procedures may vary depending on the manufacturer.

10. Will OBDII code P114C cause my vehicle to fail emissions testing?

- Yes, vehicles with an active P114C code are likely to fail emissions testing, as it indicates a problem with the fuel trim that affects emissions levels. Addressing the issue is necessary for passing emissions tests.

Discuss the causes and fixes for P114C OBDII Code

Submit a New Comment

Code P114C comments

No comments found for this page.