Fault Code P2191
Code meaning, symptoms, possible causes, part number, and estimated cost.
P2191
System Too Lean at Idle Bank 1
This code indicates an excessively lean fuel-air mixture in engine bank 1, especially when the engine is idling. This can affect fuel efficiency and potentially cause long-term engine damage.
Part Details
Part Name
Oxygen Sensor, Mass Air Flow (MAF) Sensor
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪200 - ₪1500
Engine Location
Engine compartment
Symptoms
- Check Engine Light on
- Poor engine performance
- Hard starting
- Fuel odor from engine
Possible Causes
- 1Vacuum leaks
- 2Faulty oxygen sensor
- 3Clogged or failing fuel injectors
- 4Low fuel pressure
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