What Does P0100 Mean on Your 2024 Toyota Tundra?
A P0100 code on your 2024 Toyota Tundra indicates the ECM has detected a malfunction in the mass air flow (MAF) sensor circuit. Your 3rd-generation Tundra uses the 3.4L twin-turbo V6 (i-FORCE) or 3.4L twin-turbo V6 hybrid (i-FORCE MAX), and this code is uncommon on a newer truck.
Symptoms
- Check engine light on
- Rough or unstable idle
- Hesitation during acceleration
- Reduced power
- Poor fuel economy
- Possible stalling
Likely Causes
- MAF sensor connector issue (28%) — Connection not fully seated or vibrated loose during truck use.
- Contaminated MAF sensor (27%) — Dust or debris, especially if used in work or off-road conditions.
- Faulty MAF sensor (18%) — Factory-defective sensor.
- Intake or intercooler piping leak (14%) — The twin-turbo system has multiple connection points.
- Software calibration (8%) — ECM may need a software update.
- Wiring defect (5%) — Manufacturing issue.
What to Do
- Toyota dealer visit — Fully covered warranty work.
- Note conditions — Document when the issue occurs (dusty conditions, towing, cold start).
- Don't clear the code — Dealer needs freeze frame data.
Repair Costs
- Under warranty: $0—covered under Toyota's 3-year/36,000-mile warranty through 2027
Warranty
Your 2024 Tundra is fully covered under Toyota's 3-year/36,000-mile warranty through 2027 and the federal emissions warranty for 8 years/80,000 miles through 2032.