P0100 on Your 2023 Honda HR-V
A P0100 code on your 2023 Honda HR-V indicates the ECM has detected a malfunction in the mass air flow (MAF) sensor circuit. As the first year of the completely redesigned 3rd-generation HR-V, your 2023 model features the new 2.0L naturally aspirated engine—a significant upgrade from the previous 1.8L.
Symptoms
- Check engine light on
- Rough or unstable idle
- Hesitation during acceleration
- Reduced power
- Poor fuel economy
- Possible stalling
Common Causes on a Newer HR-V
- Contaminated MAF sensor (30%) — Oil or debris from an aftermarket oiled filter or early service contamination.
- MAF sensor connector issue (25%) — Connection not fully seated or vibrated loose.
- Faulty MAF sensor (20%) — Factory-defective sensor.
- Intake assembly issue (12%) — Loose clamp or improperly seated boot.
- Software calibration (8%) — First-year model may need ECM software refinement.
- Wiring defect (5%) — Manufacturing wiring issue.
What to Do
- Check warranty — Honda's 3-year/36,000-mile warranty extends through 2026.
- Dealer visit — Warranty repair at no cost.
- Document symptoms — Note when the issue occurs to aid diagnosis.
Repair Costs
- Under warranty: $0
- MAF cleaning (if out of warranty): $10–$15 (DIY)
- MAF sensor: $135–$300
Warranty
Your 2023 HR-V is covered under Honda's 3-year/36,000-mile warranty through 2026 and the federal emissions warranty for 8 years/80,000 miles through 2031.