Investigating the P0100 Code on Your 2020 Dodge Challenger
A P0100 code on your 2020 Dodge Challenger means the PCM has detected a mass airflow (MAF) sensor circuit malfunction. Whether your Challenger runs the 3.6L Pentastar V6, 5.7L Hemi V8, or 6.4L Hemi V8, the MAF sensor provides essential airflow data for fuel delivery. After 4-6 years of service, contamination is the top suspect.
What P0100 Means
P0100 flags erratic, intermittent, or out-of-range MAF sensor signals. The Challenger's naturally aspirated engines have straightforward intakes, but they're frequently modified with aftermarket cold air intakes — a common contamination source.
Common Symptoms
- Check engine light on
- Rough or surging idle
- Reduced power and acceleration
- Poor fuel economy
- Hesitation during spirited driving
- MDS issues (Hemi V8s)
Top Causes Ranked by Likelihood
- MAF sensor contamination (35-40%) — Oil vapor, debris, or oiled filter residue
- Aftermarket intake issues (15-20%) — Cold air intake or oiled filter contaminating MAF
- Air filter neglect (15-20%) — Overdue replacement
- Intake duct leak (10-15%) — Cracked boot or loose clamp
- Wiring and connector aging (10-15%) — Corrosion from engine bay heat
- MAF sensor wear (5-10%) — Element degradation
DIY Repair Guide
Clean the MAF ($10-15): First step. If you have an oiled filter, this is especially likely to help.
Check aftermarket parts: If modified, inspect for proper fitment and sealing.
Replace air filter: Fresh filter if overdue.
Inspect intake duct: Check for cracks and loose connections.
Warranty Status
Basic warranty expired 2023. Powertrain (5yr/60k) through 2025. Emissions warranty: 8yr/80k through 2028.
Estimated Repair Costs
- MAF sensor cleaning: $10-15 (DIY)
- MAF sensor replacement: $100-260 (OEM) + $80-150 (labor)