AutoCodes – Nissan – P117A Nissan

P117A Nissan Code - Cylinder A/F Imbalance Monitoring Bank 1

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
P117A Nissan indicates Cylinder A/F Imbalance Monitoring Bank 1.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 33,661
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 26, 2019
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Code P117A 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 P117A Nissan - Cylinder A/F Imbalance Monitoring Bank 1 - AutoCodes.com
P117A Nissan Code - Cylinder A/F Imbalance Monitoring Bank 1

What are the Possible Causes of the DTC P117A 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 P117A 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 P117A 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 P117A Nissan code?

Need more information on how to fix the P117A Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P117A 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 P117A Nissan Code

1. What are common symptoms of OBDII code P117A in a Nissan related to Cylinder A/F Imbalance Monitoring Bank 1?

Symptoms may include poor engine performance, rough idle, decreased fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P117A in a Nissan?

Causes of this code may include a faulty oxygen sensor, vacuum leak, issues with the fuel injectors, or problems with the air/fuel ratio.

3. How can I diagnose OBDII code P117A in my Nissan?

Diagnosis typically involves using an OBDII scanner to read the code, performing a visual inspection for any obvious issues, and conducting further testing on the oxygen sensor, fuel injectors, and air intake system.

4. Can I continue driving my Nissan with OBDII code P117A present?

It is not recommended to continue driving with this code present, as it can lead to further engine damage and decreased performance. It is best to address the issue promptly.

5. How can I repair OBDII code P117A in my Nissan?

Repair methods may vary depending on the underlying cause, but common solutions include replacing the oxygen sensor, repairing vacuum leaks, cleaning or replacing fuel injectors, and ensuring proper air/fuel ratio.

6. Are there any DIY tips for fixing OBDII code P117A in a Nissan?

While some basic troubleshooting like checking for loose connections or vacuum leaks can be done by DIY enthusiasts, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

7. How much does it typically cost to fix OBDII code P117A in a Nissan?

Repair costs can vary based on the exact cause of the code and the labor rates in your area. It is advisable to get multiple quotes from reputable auto repair shops for an accurate estimate.

8. Can OBDII code P117A in a Nissan be triggered by a loose gas cap?

While a loose gas cap can trigger the check engine light, it is unlikely to directly cause the specific Cylinder A/F Imbalance Monitoring Bank 1 code. It is still recommended to ensure the gas cap is properly tightened.

9. Will resetting the OBDII code P117A in my Nissan make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. The problem needs to be diagnosed and repaired to prevent the code from reoccurring.

10. Is it safe to ignore OBDII code P117A in my Nissan if the symptoms are not severe?

Ignoring the code can lead to further damage and potentially more costly repairs down the line. It is best to address the issue as soon as possible to prevent any long-term issues with your vehicle.

Discuss the causes and fixes for P117A Nissan OBDII Code

  • I recently replaced the thermostat on my 2014 Nissan 370Z. After completion of the repair, the car started throwing a P117A code. The car seems to run fine, with no noticeable change in performance. I can clear the code, but after a few miles, it will throw it again. It was not throwing this code prior to replacing the thermostat. Any ideas?

  • Unfortunately I can't find any information about the P117A. I have checked all my factory manuals and there is no code for the P117A code on the 2014 Z.

  • I replaced the spark plugs and ignition coils on my 2013 Nissan altima and now it's running bad and throwing code p117a. What can I do to try and fix it without taking it to a shop?

  • If you didn't have that problem and code before, then my only suggestion is to double-check the installation. Make sure you didn't cross the coils' connectors, and that all the ignition coils are fully connected."

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