Powertrain
generic / SAE
P2190
System Too Rich at Idle (Bank 2)
Fuel trim on bank 2 hits the rich limit only at idle. Often a leaking injector dribbling fuel at low load, a sticky purge valve dumping fuel vapour, or fuel pressure regulator that fails to relieve pressure when intake vacuum is high.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 90
Possible causes
- Leaking injector at idle on bank 2 high
- Purge valve stuck open medium
Symptoms
- Check engine light on
- Increased fuel consumption
- Black smoke from exhaust on acceleration
- Smell of unburned fuel, fouled spark plugs
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 40–500 €
- Estimated time: 0.5–3.5 h
- Component: fuel injector
- Component: evap purge valve
- Component: fuel pressure regulator
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012