P0100 on Your 2022 Honda Civic
A P0100 code on your 2022 Honda Civic means the ECM has detected a malfunction in the mass air flow (MAF) sensor circuit. As the first year of the 11th-generation Civic, your 2022 model uses either the 2.0L or 1.5L turbo engine, both depending on accurate airflow measurement for proper engine management.
Symptoms
- Check engine light illuminated
- Rough or unstable idle
- Hesitation or stumbling on acceleration
- Reduced power
- Poor fuel economy
- Possible stalling
Common Causes
- Contaminated MAF sensor (35%) — Oil, dirt, or debris on the sensing element. Oiled aftermarket air filters are a frequent contributor.
- Wiring or connector damage (22%) — Corrosion, chafing, or loose connections at the MAF sensor.
- Faulty MAF sensor (18%) — Internal failure causing erratic readings.
- Intake air leak (12%) — Unmetered air entering after the MAF sensor through cracked boots or loose clamps.
- Air filter restriction (8%) — Severely clogged filter.
- ECM issue (5%) — Rare ECM fault.
Diagnostic Steps
- Scan tool data — Read MAF values for proper range and consistency.
- Visual inspection — Check connector, wiring, and intake tract.
- MAF cleaning — Use dedicated MAF cleaner spray.
- Intake leak check — Inspect all post-MAF connections.
- MAF replacement — If cleaning doesn't resolve the code.
Repair Costs
- MAF cleaning: $10–$15 (DIY)
- Air filter: $15–$30 (DIY)
- MAF sensor: $150–$340
- Intake boot: $80–$200
- Wiring repair: $100–$280
Warranty
Your 2022 Civic's 3-year/36,000-mile warranty extends through 2025. The federal emissions warranty covers the MAF sensor for 8 years/80,000 miles through 2030. Check mileage eligibility with your dealer.