P117B
Cylinder A/F Imbalance Monitoring Bank 2
P117B is an OBD-II diagnostic trouble code meaning: Cylinder A/F Imbalance Monitoring Bank 2. Common causes: dirty or faulty fuel injectors, air leaks in the intake manifold. Estimated repair cost: $17–89.
Symptoms
- Uneven engine operation
- Increased fuel consumption
- Reduced engine power
- Dips during acceleration
- Check Engine Light Is On
Causes
- Dirty or faulty fuel injectors
- Air leaks in the intake manifold
- Problems with oxygen sensors
- Malfunction of mass air flow sensor or absolute pressure sensor
- Dirty or damaged throttle valve
How to Fix
- Check the tightness of the intake tract
- Clean or replace fuel injectors
- Check the operation of oxygen sensors
- Diagnose mass air flow sensor and absolute pressure sensor
- Clean throttle body
Related codes
FAQ
What does the P117B code mean?
P117B is an OBD-II diagnostic trouble code that indicates: Cylinder A/F Imbalance Monitoring Bank 2
What causes a P117B error code?
The most common causes of P117B include: Dirty or faulty fuel injectors; Air leaks in the intake manifold; Problems with oxygen sensors; Malfunction of mass air flow sensor or absolute pressure sensor.
How do I fix a P117B diagnostic trouble code?
To fix P117B: Check the tightness of the intake tract. Clean or replace fuel injectors. Check the operation of oxygen sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P117B?
Yes, but get it checked soon
How much does it cost to fix P117B?
The estimated repair cost for P117B is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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