P0100 on Your 2022 Honda Accord
A P0100 code on your 2022 Honda Accord means the ECM has detected a malfunction in the mass air flow (MAF) sensor circuit. As the final year of the 10th-generation Accord, your 2022 model uses either the 1.5L turbocharged engine or the 2.0L turbocharged engine, both depending on accurate MAF readings for proper engine management.
Symptoms
- Check engine light illuminated
- Rough or unstable idle
- Hesitation during 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 common contributor on enthusiast-owned Accords.
- Wiring or connector damage (22%) — Corrosion or loose connections at the MAF sensor after three-plus years.
- Faulty MAF sensor (18%) — Internal sensor failure producing erratic readings.
- Intake air leak (13%) — The 1.5T and 2.0T have intercooler piping that adds potential leak points beyond the MAF sensor.
- Air filter restriction (7%) — Overdue filter change.
- ECM issue (5%) — Rare ECM fault.
Diagnostic Steps
- Scan tool data — Read MAF values and compare to specifications.
- Visual inspection — Check the MAF connector, wiring, and intake tract.
- MAF sensor cleaning — Use dedicated MAF cleaner spray on the sensing element.
- Intake inspection — Check all post-MAF connections, including intercooler piping on turbo models.
- Air filter check — Replace if dirty or switch from oiled to paper filter.
- MAF replacement — If cleaning doesn't restore proper readings.
Repair Costs
- MAF cleaning: $10–$15 (DIY)
- Air filter: $15–$30 (DIY)
- MAF sensor: $150–$350
- Intake boot/piping: $85–$220
- Wiring repair: $100–$290
Warranty
Your 2022 Accord's 3-year/36,000-mile warranty extends through 2025—check your expiration date, as you may still be covered. The federal emissions warranty covers the MAF sensor for 8 years/80,000 miles through 2030.