Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHYUNDAI2011SANTA FE GLS, 3.5 G, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 21 (ENGINE CONTROL SYSTEM DIAGNOSIS (2 OF 2) - G2.4 DOHC)DTC P2191: SYSTEM TOO LEAN AT HIGHER LOAD (MULTIPLE) (BANK 1)INSPECTION/REPAIRW/HARNESS INSPECTIONFUEL SYSTEM INSPECTION
2011 Hyundai Santa Fe GLS, 3.5 G, AWD
Fuel System Inspection
2011 Hyundai Santa Fe GLS, 3.5 G, AWDSECTION Fuel System Inspection
WARNING: This page is about a different variant/trim than selected.
- Fuel Line Pressure Inspection
- Check the fuel for excessive water, alcohol, or other contaminants. Replace contaminated fuel as necessary.
- Install a fuel pressure gage.
- Inspect fuel pressure with normal idle status.
Specification : 338~348kPa (3.45~3.55kg/cm2 )
- Is fuel pressure within the specified value?
YES
- Go to next step as below.
NO
- Inspect the suspected area. Refer to table as below. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
POSSIBLE CAUSE AND SUSPECTED AREA REFERENCE CHARTCondition Possible Cause Suspected Area Fuel Pressure too low Clogged fuel filter Fuel filter Fuel leak on the fuel-pressure regulator that is assembled on fuel pump Fuel Pump (Fuel Pressure Regulator) Fuel Pressure too High Sticking fuel pressure regulator Fuel Pump (Fuel Pressure Regulator)
- Fuel Pressure Hold Inspection
- Stop the engine and check for a change in the fuel pressure gauge reading.
Specification : After engine stops, the gauge reading should hold for minimum 5 minutes
- Is fuel pressure within the specified value?
YES
- Visually/physically inspect the engine mechanical problem. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Inspect the leakage or malfunctioning of suspected area. Refer to table as below. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
POSSIBLE CAUSE AND SUSPECTED AREA REFERENCE CHARTCondition Possible Cause Suspected Area Fuel pressure drops slowly Injector leak Injector Fuel pressure drops immediately Stuck open in check valve of the fuel pump Fuel Pump
- Stop the engine and check for a change in the fuel pressure gauge reading.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.