P0100 on Your 2023 Ford Bronco Sport
A P0100 code on your 2023 Ford Bronco Sport indicates the PCM has detected a malfunction in the mass air flow (MAF) sensor circuit. Your Bronco Sport uses the 1.5L EcoBoost or 2.0L EcoBoost (Badlands), and this code is relatively uncommon on a newer vehicle unless off-road contamination is involved.
Symptoms
- Check engine light on
- Rough or unstable idle
- Hesitation during acceleration
- Reduced power
- Poor fuel economy
- Possible stalling
Common Causes
- Contaminated MAF sensor (30%) — Dust from off-road use or aftermarket oiled filter.
- MAF connector issue (25%) — Connection vibrated loose.
- Faulty MAF sensor (20%) — Early sensor failure.
- Intake or turbo piping issue (13%) — Loose EcoBoost piping.
- Software calibration (7%) — PCM may need update.
- Wiring issue (5%) — Defect or damage.
What to Do
- Check warranty — Ford's 3-year/36,000-mile warranty extends through 2026.
- Dealer visit — Likely covered at no cost.
- Document conditions — Note if the code appeared after off-road use.
Repair Costs
- Under warranty: $0
- MAF cleaning (if out of warranty): $10–$15 (DIY)
- MAF sensor: $125–$310
Warranty
Your 2023 Bronco Sport is covered under Ford's 3-year/36,000-mile warranty through 2026 and the federal emissions warranty for 8 years/80,000 miles through 2031.