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) (1 OF 2)DTC TROUBLESHOOTING PROCEDURESDTC P0102: MASS OR VOLUME AIR FLOW CIRCUIT LOW INPUTDTC DETECTING CONDITION

2005 Hyundai Santa Fe GLS, 2.7 D, AWD

DTC P0102: Mass Or Volume Air Flow Circuit Low Input: DTC Detecting Condition

2005 Hyundai Santa Fe GLS, 2.7 D, AWDSECTION DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item	Detecting Condition	Possible Cause
DTC Strategy	Voltage range check	Open or short to ground in signal circuit Open in power supply circuit Contact resistance in connections. Faulty MAF sensor
Enable Conditions	1500 > Engine speed (RPM) > 3500 450 > Measured Mass Air Flow (mg/rev.) > 1050 Coolant temperature < 60°C (140°F)
Threshold Value	Measured MAF > 1.7g/sec
Diagnostic Time	0.6 sec.
MIL On Condition	2 Driving Cycles

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.