Can a mass air flow cause a fast idle?

Yes, a faulty mass air flow (MAF) sensor can cause a fast idle in a vehicle. If the MAF sensor provides incorrect readings, the engine control unit may deliver more fuel than necessary, leading to an elevated idle speed. Additionally, a dirty or malfunctioning MAF sensor can disrupt the air-fuel mixture, further contributing to irregular idle behavior. Regular maintenance and sensor checks can help prevent this issue.