AutoCodes – Nissan – P117B Nissan

P117B Nissan Code - Cylinder A/F Imbalance Monitoring Bank 2

Quick Answer

The Engine Control Module (ECM) monitors the lean/rich air fuel ratio state in any cylinder. Common causes include Fuel injector, Exhaust gas leaks, Incorrect fuel pressure. 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: P117B Nissan indicates Cylinder A/F Imbalance Monitoring Bank 2.
Common causes: Common causes include Fuel injector, Exhaust gas leaks, Incorrect fuel pressure.
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 5,435

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 P117B Nissan Description

The Engine Control Module (ECM) monitors the lean/rich air fuel ratio state in any cylinder. The ECM sets the OBDII code when detects a lean/rich air fuel ratio state in any cylinder for a specified length of time.

OBDII Code P117B Nissan - Cylinder A/F Imbalance Monitoring Bank 2 - AutoCodes.com — P117B Nissan Code - Cylinder A/F Imbalance Monitoring Bank 2

What does this mean?

What are the Possible Causes of the DTC P117B Nissan?

Fuel injector
Exhaust gas leaks
Incorrect fuel pressure
Mass air flow sensor
Intake air leaks
Lack of fuel
Incorrect PCV hose connection
Improper spark plug
Insufficient compression
The fuel injector circuit is open or shorted
Ignition coil
The ignition signal circuit is open or shorted

How to Fix the DTC P117B Nissan?

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 P117B Nissan 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 P117B Nissan code?

Need more information on how to fix the P117B Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P117B Nissan 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 P117B Nissan Code

1. What are common symptoms of OBDII code P117B Nissan Cylinder A/F Imbalance Monitoring Bank 2?

- Common symptoms may include rough idling, decreased engine performance, and potentially an illuminated check engine light.

2. What are some possible causes of OBDII code P117B Cylinder A/F Imbalance Monitoring Bank 2 in a Nissan?

- Possible causes may include a faulty oxygen sensor, vacuum leaks, fuel delivery issues, or a problem with the fuel injector.

3. How can I diagnose the issue related to OBDII code P117B in my Nissan?

- Diagnosing the issue may involve using an OBDII scanner to retrieve the specific code, checking for any related symptoms, and conducting a thorough inspection of the oxygen sensor and fuel system components.

4. Can I continue to drive my Nissan with OBDII code P117B present?

- It is not recommended to continue driving your vehicle with this code present, as it may lead to further engine damage and decreased fuel efficiency.

5. How can I repair OBDII code P117B Cylinder A/F Imbalance Monitoring Bank 2 in my Nissan?

- Repairing this code may involve replacing a faulty oxygen sensor, addressing any vacuum leaks, ensuring proper fuel delivery, or cleaning/replacing a clogged fuel injector.

6. Is it possible to reset the OBDII code P117B in a Nissan without fixing the underlying issue?

- While you can clear the code temporarily, it is important to address the root cause of the problem to prevent it from recurring and potentially causing more serious issues.

7. How much does it typically cost to repair OBDII code P117B in a Nissan?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a relatively inexpensive oxygen sensor replacement to a more costly fuel system repair.

8. Are there any maintenance tips to prevent OBDII code P117B from occurring in my Nissan?

- Regularly servicing your vehicle, including changing the oxygen sensor at recommended intervals, checking for vacuum leaks, and ensuring proper fuel system maintenance, can help prevent this code from appearing.

9. Can a DIY enthusiast fix OBDII code P117B in a Nissan, or is it best left to professionals?

- Depending on your skill level and access to tools, some aspects of diagnosing and repairing this code may be tackled by a DIY enthusiast. However, complex issues may require professional assistance.

10. How long does it typically take to repair OBDII code P117B in a Nissan?

- The repair time can vary based on the specific cause of the code and the extent of the necessary repairs, ranging from a quick sensor replacement to a more involved troubleshooting and repair process.