What Does P0100 Mean on Your 2024 Toyota Camry?
A P0100 code on your 2024 Toyota Camry indicates the ECM has detected a malfunction in the mass air flow (MAF) sensor circuit. This is unusual on a new vehicle and likely points to a factory connection issue, contamination, or defective sensor.
Your 2024 Camry—the final year of the 8th generation (2018–2024)—is available with a 2.5L four-cylinder or 2.5L hybrid powertrain. Both rely on the MAF sensor for precise fuel metering and emissions control.
Symptoms
- Check engine light on
- Rough or unstable idle
- Hesitation during acceleration
- Reduced power
- Poor fuel economy
- Possible stalling at idle
Likely Causes on a New Camry
- MAF sensor connector issue (30%) — Factory connection not fully seated or vibrated loose.
- Contaminated MAF sensor (25%) — Oil or debris introduced during manufacturing or early service.
- Faulty MAF sensor (20%) — Factory-defective sensor.
- Software calibration (12%) — ECM may need a software update.
- Intake assembly issue (8%) — Loose clamp or improperly seated air intake.
- Wiring defect (5%) — Manufacturing wiring issue.
What to Do
- Schedule a Toyota dealer visit — This is warranty work at zero cost.
- Note symptoms — Document when issues occur to aid technician diagnosis.
- Don't clear the code — Leave freeze frame data for the dealer.
Repair Costs
- Under warranty: $0—covered under Toyota's 3-year/36,000-mile warranty through 2027
Warranty
Your 2024 Camry is fully covered under Toyota's 3-year/36,000-mile basic warranty through 2027 and the federal emissions warranty for 8 years/80,000 miles through 2032. The MAF sensor is emissions-related—dealer diagnosis and repair are at no cost.