P2190

System Too Rich at Idle Bank 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Increased fuel consumption
Unstable engine idling
Black smoke from the exhaust pipe
Loss of engine power
Smell of gasoline from the exhaust system

Causes

Malfunction of the oxygen sensor (lambda probe) bank 2
Dirty or faulty fuel injectors
Increased pressure in the fuel rail
Vacuum leak in bank 2
Malfunction of the mass air flow sensor (MAF)

How to Fix

Check oxygen sensor readings using a scanner
Inspect fuel injectors for dirt or leaks
Check the pressure in the fuel system
Check the tightness of the inlet tract of bank 2
Check the performance of the mass air flow sensor

Related codes

P2187 P2191 P2192