Investigating the P0100 Code on Your 2024 Dodge Hornet
A P0100 code on your 2024 Dodge Hornet signals the ECM has detected a mass airflow (MAF) sensor circuit malfunction. Whether your Hornet is the GT with the 2.0L turbo or the R/T PHEV with the 1.3L turbo plug-in hybrid, precise MAF data is essential for powertrain management. Under full warranty, a dealer visit is the clear first step.
Understanding P0100
P0100 means the MAF sensor signal is erratic, intermittent, or outside expected parameters. The turbocharged engines need accurate pre-turbo airflow data for boost control and fuel delivery.
Common Symptoms
- Check engine light on
- Rough idle
- Reduced turbo boost
- Poor fuel economy
- Hesitation during acceleration
- PHEV: possible hybrid system limitations
Top Causes Ranked by Likelihood
- MAF sensor contamination (35-40%) — Oil vapor or debris
- Charge air issue (15-20%) — Turbo piping defect
- Air filter concern (15-20%) — Improperly seated filter
- Electrical fault (10-15%) — Loose connector
- MAF sensor failure (10-15%) — Component defect
- ECM software (5-10%) — Calibration update
Warranty Coverage
Your 2024 Hornet is covered by Dodge's 3-year/36,000-mile warranty through 2027, 5-year/60,000-mile powertrain warranty through 2029, and the federal 8-year/80,000-mile emissions warranty. The PHEV model may have additional battery/hybrid warranty coverage.
Estimated Costs (Reference Only)
- MAF sensor replacement: $130-300 (OEM) + $80-160 (labor)
- All covered under warranty