P0100 on Your 2022 Honda CR-V
A P0100 code on your 2022 Honda CR-V means the ECM has detected a malfunction in the mass air flow (MAF) sensor circuit. Your 5th-generation CR-V (2017–2022) uses the 1.5L turbocharged engine exclusively, relying on accurate MAF readings for proper boost control and fuel delivery.
Symptoms
- Check engine light on
- Rough or unstable idle
- Hesitation and reduced power during acceleration
- Poor fuel economy
- Possible stalling at idle
- ECM may limit boost pressure as protection
Common Causes
- Contaminated MAF sensor (35%) — Oil, dirt, or debris coating the sensing element. The 1.5T's PCV system can contribute oil mist, and oiled aftermarket air filters are a frequent culprit.
- Wiring or connector issues (22%) — Three-plus years of heat and vibration affecting electrical connections.
- Faulty MAF sensor (18%) — Internal sensor failure.
- Intake air leak (13%) — Cracked intake boot or loose clamp. The 1.5T's intercooler piping adds potential leak points.
- Air filter restriction (7%) — Overdue filter change.
- ECM issue (5%) — Rare ECM fault.
Diagnostic Steps
- Scan tool data — Read MAF sensor values at idle and under load.
- Visual inspection — Check connector, wiring, and intake tract.
- MAF sensor cleaning — Use dedicated MAF cleaner spray.
- Intake inspection — Check post-MAF connections and intercooler piping.
- Air filter check — Replace if dirty or if an oiled filter is installed.
- MAF replacement — If cleaning doesn't restore proper readings.
Repair Costs
- MAF cleaning: $10–$15 (DIY)
- Air filter: $15–$28 (DIY)
- MAF sensor: $150–$340
- Intake boot/piping: $85–$210
- Wiring repair: $100–$280
Warranty
Your 2022 CR-V's 3-year/36,000-mile warranty extends through 2025—check your exact expiration. The federal emissions warranty covers the MAF sensor for 8 years/80,000 miles through 2030.