Toyota Prius C code P3190 with issues after replacing mass flow sensor, air filter, and spark plugs on Toyota Prius C

Some Toyota Prius C owners report experiencing trouble code P3190, which indicates weak engine power after replacing components like the mass flow sensor, air filter, and spark plugs. This issue may stem from various factors, including air intake problems, fuel pump issues, or mechanical failures within the engine. Owners have identified potential causes such as fuel system problems, ignition system malfunctions, sensor failures, and other engine-related issues. To troubleshoot, it is recommended to perform a thorough diagnostic scan, inspect and clean fuel injectors and lines, and check for any leaks or obstructions in the air intake system. Additionally, some owners find that sub-codes may be present, necessitating the use of diagnostic tools like Techstream. If the problem persists, seeking assistance from a professional mechanic or Toyota dealer is advised.