P2179

System Too Lean Off Idle Bank 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

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

P2177 P2178 P2180