Investigating the P0100 Code on Your 2022 Dodge Hornet
A P0100 code on your 2022 Dodge Hornet (technically the 2023 model year as the first Hornet, but listed as 2022) indicates the ECM has detected a mass airflow (MAF) sensor circuit malfunction. The Hornet's 2.0-liter turbocharged four-cylinder engine — derived from Alfa Romeo's GME platform — requires precise MAF data for boost and fuel management.
What P0100 Means
P0100 flags erratic, intermittent, or out-of-range MAF sensor signals. The turbo 2.0L needs accurate pre-turbo airflow measurements for fuel injection, boost control, and emissions management.
Common Symptoms
- Check engine light on
- Rough or unsteady idle
- Reduced turbo boost and power
- Poor fuel economy
- Hesitation during acceleration
- Possible limp mode
Top Causes Ranked by Likelihood
- MAF sensor contamination (35-40%) — Oil vapor and debris on the sensing element
- Charge air leak (15-20%) — Turbo piping or intercooler connection issue
- Air filter issue (15-20%) — Dirty or improperly installed filter
- Connector or wiring fault (10-15%) — Loose MAF connection
- MAF sensor failure (10-15%) — Component defect
Warranty Status
Your Hornet is within Dodge's 3-year/36,000-mile basic warranty and 5-year/60,000-mile powertrain warranty. Federal emissions warranty: 8yr/80k. Contact your dealer for warranty repair.
Estimated Repair Costs
- MAF sensor cleaning: $10-15 (DIY)
- MAF sensor replacement: $130-300 (OEM) + $80-160 (labor)