Investigating the P0100 Code on Your 2024 Hyundai Tucson
A P0100 code on your 2024 Hyundai Tucson indicates the ECM has detected a malfunction in the Mass Air Flow (MAF) sensor circuit. Your 4th-generation Tucson's 2.5L Smartstream engine relies on precise airflow data for fuel efficiency and performance. Under full factory warranty with Hyundai's industry-leading coverage, your dealer should handle this at no cost.
The MAF System on the 2024 Tucson
The 2024 Tucson uses a 2.5L Smartstream MPI engine producing 187 horsepower, paired with an 8-speed automatic transmission. The hot-wire MAF sensor measures incoming air for fuel injection, ignition timing, and transmission shift calculations. P0100 indicates the circuit signal is outside the ECM's expected parameters. Some Tucson models are available as hybrids or plug-in hybrids with different powertrains—this guide covers the standard 2.5L gasoline engine.
Symptoms
- Check engine light on with P0100
- Hesitation during acceleration
- Rough or unstable idle
- Fuel economy below the expected 26-33 mpg ratings
- 8-speed automatic may shift roughly
- Possible reduced power mode
Common Causes
- Contaminated MAF sensor element (30-35%) — PCV oil vapor contamination possible even on new vehicles.
- Intake system leak or loose connection (20-25%) — Improperly seated air filter, loose clamp, or disconnected hose.
- MAF sensor or circuit defect (20-25%) — Manufacturing defect—straightforward warranty replacement.
- Software calibration issue (10-15%) — Hyundai may release ECM updates for the 2024 model year.
- Connector or wiring fault (5-10%) — Assembly-related issues.
Warranty-First Approach
Your 2024 Tucson benefits from Hyundai's 5-year/60,000-mile basic warranty through approximately 2029 and the 10-year/100,000-mile powertrain warranty. The MAF sensor is also covered under the 8-year/80,000-mile federal emissions warranty through 2032:
- Document symptoms — Note when the light appeared and performance changes.
- Contact your Hyundai dealer — Schedule service mentioning P0100. No-cost warranty repair.
- Request TSB check — Ask about Technical Service Bulletins using Hyundai's GDS diagnostic system.
- Keep documentation — Save repair orders.
Reference Costs (If Out of Warranty)
- Under warranty: $0
- MAF sensor cleaning: $10-15
- MAF sensor replacement: $110-240 parts, $50-100 labor
- Intake repair: $30-100