Investigating the P0100 Code on Your 2020 Dodge Charger
A P0100 code on your 2020 Dodge Charger indicates the PCM has detected a mass airflow (MAF) sensor circuit malfunction. Whether your Charger runs the 3.6L Pentastar V6 (SXT/GT), 5.7L Hemi V8 (R/T), or 6.4L Hemi V8 (Scat Pack), accurate MAF data is essential for fuel delivery and, on V8 models, MDS cylinder deactivation management.
What P0100 Means
P0100 flags erratic, intermittent, or out-of-range MAF sensor signals. After 4-6 years of service, the hot-film MAF element accumulates oil vapor and debris. The Charger's naturally aspirated engines have straightforward intake tracts, making contamination the primary concern.
Common Symptoms
- Check engine light on
- Rough or surging idle
- Reduced power and acceleration
- Poor fuel economy
- Hesitation during throttle application
- MDS irregularities (Hemi V8s)
Top Causes Ranked by Likelihood
- MAF sensor contamination (35-40%) — Oil vapor and debris deposits over years of use
- Air filter neglect (20-25%) — Overdue replacement or housing seal degradation
- Intake duct leak (15-20%) — Cracked boot or loose clamp
- Wiring and connector aging (10-15%) — Corrosion from engine bay heat
- MAF sensor wear (10-15%) — Sensing element degradation
DIY Repair Guide
The 2020 Charger is past Dodge's basic warranty (expired 2023). Powertrain warranty (5yr/60k) runs through 2025.
Clean the MAF ($10-15): Resolves ~35-40% of cases. Use dedicated MAF cleaner only.
Replace air filter: Essential maintenance if overdue.
Inspect intake duct: Check for cracks and loose clamps along the entire tract.
Scan with wiTECH or compatible tool: Compare live MAF data against specs for your engine.
Aftermarket Intake Warning
The Charger is commonly modified with cold air intakes. If you've installed an aftermarket intake or oiled filter (K&N), these can contaminate the MAF sensor and should be checked first.
Emissions Warranty
Federal emissions warranty covers the MAF for 8 years/80,000 miles through 2028.
Estimated Repair Costs
- MAF sensor cleaning: $10-15 (DIY)
- Air filter: $20-35
- MAF sensor replacement: $100-260 (OEM) + $80-150 (labor)
- Intake duct: $35-90 + $60-100 (labor)