Investigating the P0100 Code on Your 2024 Lexus NX
A P0100 code on your 2024 Lexus NX signals the ECM has detected a mass airflow (MAF) sensor circuit malfunction. Under full Lexus warranty, a dealer visit handles this at no cost.
Understanding P0100
P0100 means the MAF sensor signal is erratic, intermittent, or outside expected parameters. The NX's various powertrains all need reliable airflow data for proper management.
Common Symptoms
- Check engine light on
- Rough idle
- Reduced power
- Poor fuel economy
- Hesitation
Top Causes Ranked by Likelihood
- MAF sensor contamination (35-40%) — Oil vapor or debris
- Air filter issue (20-25%) — Damaged filter
- Intake or charge leak (15-20%) — Boot or pipe leak
- Electrical fault (10-15%) — Loose connector
- MAF sensor failure (10-15%) — Component defect
Warranty Coverage
Your 2024 NX is covered by Lexus's 4-year/50,000-mile warranty through 2028, 6-year/70,000-mile powertrain through 2030, and federal emissions warranty. All repairs covered.
Estimated Costs (Reference Only)
- MAF sensor replacement: $140-320 (OEM) + $80-150 (labor)
- All covered under warranty