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 DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (2.7L) (2 OF 2)DTC TROUBLESHOOTING PROCEDURESDTC P0452: EVAP EMISSION SYSTEM-PRESSURE SENSOR LOW INPUTFUEL TANK PRESSURE SENSOR INSPECTION
2005 Hyundai Santa Fe GLS, 2.7 D, AWD
Fuel Tank Pressure Sensor Inspection
2005 Hyundai Santa Fe GLS, 2.7 D, AWDSECTION Fuel Tank Pressure Sensor Inspection
- Start engine and install scan tool.
- Monitor "FUEL TANK PRESSURE" parameter on the current data list with depressing increasing engine speed. Specification: Signal value will vary between -2 mmHg to 2 mmHg depending on variation in engine speed.
- Approx. 0-2 mmHg (2.5V) at Ig. On
- Approx. 0 mmHg at 1400 RPM
- Approx. -2 mmHg at 4000 RPM
- Is signal value within specification?
YES
- Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Check for cracks or damage in hose connecting canister and fuel pump. Repair or replace as necessary.
- Check for open or short in FTPS harness. Repair as necessary.
If OK, test with a new FTPS and check for proper operation. If problem is corrected, replace FTPS 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.