System Too Lean At Higher Load Bank 1
Table of contents
P2191 VOLVO Possible Causes
- Intake Air Leak
- Clogged or Leaking Fuel Injectors
- Faulty Oxygen sensor
- Faulty Mass Air Flow (MAF) Sensor
- Exhaust System Air Leaks
- Fuel injection problem
- Engine mechanical condition
How do I fix code P2191 VOLVO?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P2191 VOLVO code
The cost of diagnosing the P2191 VOLVO code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2191 VOLVO Description
The control module receives information from the heated oxygen sensor (HO2S) about the fuel/air mixture when idling at both the lower and upper part-load range. If the fuel/air mixture deviates from λ=1, the short-term fuel trim will compensate for this by adjusting the injection time so that λ=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic Trouble Code (DTC) ECM-260A is stored when the long-term trim must be adjusted to almost maximum in the upper part load area