P117B 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 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.
Code P117B Description
What are the Possible Causes of the DTC P117B?
- 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?
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 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 code?
Need more information on how to fix the P117B code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P117B code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P117B Ford — Exhaust Gas Temperature Sensor Correlation Bank 1
- P117B Lexus — Direct Injector Fuel Performance
- P117B Nissan — Cylinder A/F Imbalance Monitoring Bank 2
- P117B Scion — Direct Injector Fuel Performance
- P117B Toyota — Direct Injector Fuel Performance
Frequently Asked Questions about P117B Code
1. What are the common symptoms of OBDII code P117B (Cylinder A/F Imbalance Monitoring Bank 2)?
- Common symptoms include poor engine performance, rough idling, and decreased fuel efficiency.
2. What causes OBDII code P117B to trigger?
- This code is usually triggered by an imbalance in the air-fuel mixture in cylinder A on bank 2 of the engine, often due to a faulty oxygen sensor or fuel injector.
3. How can I diagnose the issue related to code P117B?
- Diagnosing the issue may involve checking the oxygen sensor readings, inspecting the fuel injectors, and performing a smoke test to detect any leaks in the intake system.
4. What are some possible repair tips for resolving OBDII code P117B?
- Repair tips may include replacing the oxygen sensor, cleaning or replacing the fuel injector, addressing any vacuum leaks, and ensuring proper fuel system operation.
5. Can driving with OBDII code P117B cause further damage to the vehicle?
- Continuing to drive with this code may lead to decreased engine performance, potential damage to the catalytic converter, and increased emissions.
6. How urgent is it to address OBDII code P117B?
- It is recommended to address this code promptly to prevent further damage to the engine and ensure optimal fuel efficiency and emissions control.
7. Is it safe to drive my vehicle with OBDII code P117B?
- It is generally safe to drive the vehicle short distances with this code, but it is advisable to have the issue diagnosed and repaired as soon as possible.
8. Can a DIY enthusiast repair OBDII code P117B, or should it be done by a professional mechanic?
- While some simple repairs like replacing an oxygen sensor may be done by DIY enthusiasts, diagnosing and repairing complex issues related to this code are best handled by a professional mechanic.
9. How much can I expect to pay for repairs related to OBDII code P117B?
- The cost of repairs can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.
10. Will resetting the OBDII system clear code P117B, or is a repair necessary?
- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem.
Discuss the causes and fixes for P117B OBDII Code
Code P117B comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
