P2179
System Too Lean Off Idle Bank 2
P2179 is an OBD-II diagnostic trouble code meaning: System Too Lean Off Idle Bank 2. Common causes: air leak in the intake tract, oxygen sensor malfunction (bank 2). Estimated repair cost: $17–89.
Symptoms
- Increased fuel consumption
- Loss of engine power
- Unstable engine operation
- Check Engine Light Is On
- Possible misfires
Causes
- Air leak in the intake tract
- Oxygen sensor malfunction (bank 2)
- Problems with the fuel pump or injectors
- Dirty or faulty air flow sensor
- Exhaust gas recirculation (EGR) system leaking
How to Fix
- Check the intake tract for air leaks
- Check the operation of oxygen sensors
- Diagnose the fuel system (pressure, injectors)
- Clean or replace the mass air flow sensor if necessary
- Check the EGR system for leaks
Related codes
Error P2179 by Vehicle Brand
FAQ
What does the P2179 code mean?
P2179 is an OBD-II diagnostic trouble code that indicates: System Too Lean Off Idle Bank 2
What causes a P2179 error code?
The most common causes of P2179 include: Air leak in the intake tract; Oxygen sensor malfunction (bank 2); Problems with the fuel pump or injectors; Dirty or faulty air flow sensor.
How do I fix a P2179 diagnostic trouble code?
To fix P2179: Check the intake tract for air leaks. Check the operation of oxygen sensors. Diagnose the fuel system (pressure, injectors). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2179?
Yes, but get it checked soon
How much does it cost to fix P2179?
The estimated repair cost for P2179 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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