P0100 on Your 2022 Toyota Tundra
A P0100 code on your 2022 Toyota Tundra 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 Tundra, your 2022 model features the all-new 3.4L twin-turbo V6 (i-FORCE) or 3.4L twin-turbo V6 hybrid (i-FORCE MAX)—a dramatic change from the previous V8s.
Symptoms
- Check engine light on
- Rough or unstable idle
- Hesitation during acceleration
- Reduced power—especially noticeable when towing
- Poor fuel economy
- Possible stalling
Common Causes
- Contaminated MAF sensor (33%) — Oil, dust, or debris on the sensing element. Truck use in dusty conditions is a significant factor.
- Wiring or connector issues (22%) — Three-plus years of heat from the twin-turbo V6 bay and vibration.
- Faulty MAF sensor (18%) — Internal sensor failure.
- Intake air leak (14%) — The twin-turbo setup has more intercooler piping and connections that can develop leaks.
- Air filter restriction (8%) — Overdue replacement.
- ECM issue (5%) — Software-related on the new powertrain.
Diagnostic Steps
- Scan tool data — Read MAF values with Techstream or compatible scanner.
- MAF sensor cleaning — Use dedicated MAF cleaner spray.
- Intake inspection — Check all intercooler piping, boots, and clamps for the twin-turbo system.
- Air filter check — Replace if dirty.
- Connector inspection — Check for heat damage and corrosion.
- MAF replacement — If cleaning doesn't resolve the code.
Repair Costs
- MAF cleaning: $10–$15 (DIY)
- Air filter: $18–$35 (DIY)
- MAF sensor: $155–$370
- Intake boot/piping: $90–$230
- Wiring repair: $100–$290
Warranty
Your 2022 Tundra's 3-year/36,000-mile warranty extends through 2025. The federal emissions warranty covers the MAF sensor for 8 years/80,000 miles through 2030.