P0100 on Your 2023 Honda Ridgeline
A P0100 code on your 2023 Honda Ridgeline indicates the ECM has detected a malfunction in the mass air flow (MAF) sensor circuit. Your refreshed 2nd-generation Ridgeline uses the 3.5L V6, and this code is relatively uncommon on a newer truck.
Symptoms
- Check engine light on
- Rough or unstable idle
- Hesitation during acceleration
- Reduced power—noticeable under load
- Poor fuel economy
- Possible stalling
Common Causes
- Contaminated MAF sensor (32%) — Dust, debris, or oil from an aftermarket oiled filter. Truck use in dusty conditions accelerates contamination.
- MAF connector issue (24%) — Connection not fully seated or vibrated loose.
- Faulty MAF sensor (19%) — Early sensor failure.
- Intake assembly issue (12%) — Loose clamp or boot from factory or service.
- Air filter contamination (8%) — If an oiled aftermarket filter was installed at purchase.
- Wiring issue (5%) — Defect or damage.
What to Do
- Check warranty — Honda's 3-year/36,000-mile warranty extends through 2026.
- Dealer visit — Likely covered at no cost.
- Document conditions — Note when symptoms occur (cold start, hot, loaded, unloaded).
Repair Costs
- Under warranty: $0
- MAF cleaning (if out of warranty): $10–$15 (DIY)
- MAF sensor: $150–$350
- Intake boot: $80–$200
Warranty
Your 2023 Ridgeline 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.