P0100 on Your 2022 Honda Odyssey
A P0100 code on your 2022 Honda Odyssey indicates the ECM has detected a malfunction in the mass air flow (MAF) sensor circuit. Your Odyssey's 3.5L V6 relies on accurate airflow measurement for proper fuel delivery, and a MAF circuit failure disrupts this critical function.
Symptoms
- Check engine light illuminated
- Rough or unstable idle
- Hesitation during acceleration
- Reduced engine power
- Poor fuel economy
- Possible stalling
Common Causes
- Contaminated MAF sensor (34%) — Oil, dirt, or debris on the sensing element. Aftermarket oiled air filters are a frequent contributor.
- Wiring or connector issues (22%) — Three-plus years of heat and vibration affecting connections.
- Faulty MAF sensor (18%) — Internal sensor failure.
- Intake air leak (13%) — Cracked boot or loose clamp allowing unmetered air.
- Air filter restriction (8%) — Overdue filter change.
- ECM issue (5%) — Rare fault.
Diagnostic Steps
- Scan tool data — Read MAF values for consistency and proper range.
- Visual inspection — Check connector, wiring, and intake tract.
- MAF sensor cleaning — Use dedicated MAF cleaner spray.
- Intake inspection — Check all post-MAF connections.
- Air filter check — Replace if dirty or if oiled filter is installed.
- MAF replacement — If cleaning doesn't resolve the issue.
Repair Costs
- MAF cleaning: $10–$15 (DIY)
- Air filter: $15–$28 (DIY)
- MAF sensor: $150–$345
- Intake boot: $80–$200
- Wiring repair: $100–$280
Warranty
Your 2022 Odyssey's 3-year/36,000-mile warranty extends through 2025—check your purchase date. The federal emissions warranty covers the MAF sensor for 8 years/80,000 miles through 2030.