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 MANUALSHYUNDAI2005SANTA FE GLS, 2.7 D, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (2.7L) (1 OF 2)DTC TROUBLESHOOTING PROCEDURESDTC P0174: SYSTEM TOO LEAN (BANK 2)AIR LEAKAGE INSPECTION
2005 Hyundai Santa Fe GLS, 2.7 D, AWD
Air Leakage Inspection
2005 Hyundai Santa Fe GLS, 2.7 D, AWDSECTION Air Leakage Inspection
- Visually/physically inspect the air leakage in intake/exhaust system as following items, If OK, go to next step.
If NG, repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Vacuum hoses for splits, kinks and improper connections.
- Throttle body gasket
- Gasket between intake manifold and cylinder head
- Seals between intake manifold and fuel injectors
- Exhaust system between HO2S and Three way catalyst for air leakage
- Check for air leakage in EVAP Purge control valve.
- Remove the manifold side vacuum hose from the EVAP canister purge valve.
- Using a hand vacuum pump apply specified vacuum (Approx. 15 in, Hg) to the manifold side of the valve.
- Does the valve hold vacuum?
YES
Go to "FUEL SYSTEM INSPECTION " procedure.
NO
Repair air leakage and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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.