AutoCodes – Generic – P114C

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

Quick Answer

The diagnostic function monitors the lambda closed-loop mixture control. Common causes include Leak in exhaust system, Faulty Pre-Catalyst or Post-Catalyst Oxygen Sensor, Pre-Catalyst or Post-Catalyst Oxygen Sensor harness is open or shorted. 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 Leak in exhaust system, Faulty Pre-Catalyst or Post-Catalyst Oxygen Sensor, Pre-Catalyst or Post-Catalyst Oxygen Sensor harness is open or shorted.
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 8,749

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 Jul 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P114C Description

The diagnostic function monitors the lambda closed-loop mixture control. The Engine Control Module (ECM) sets the OBDII code when the lambda closed-loop mixture is not to factory specifications.

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

What does this mean?

What are the Possible Causes of the DTC P114C?

Leak in exhaust system
Faulty Pre-Catalyst or Post-Catalyst Oxygen Sensor
Pre-Catalyst or Post-Catalyst Oxygen Sensor harness is open or shorted
Pre-Catalyst or Post-Catalyst Oxygen Sensor circuit poor electrical connection
Faulty Digital Motor Electronics (DME)

How to Fix the DTC P114C?

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 P114C 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 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

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.