Toyota RAV4 EFI fuse blowing preventing engine from starting on Toyota RAV4

Some Toyota RAV4 owners report experiencing issues with the EFI fuse blowing, which can prevent the engine from starting. This problem is often attributed to overcurrent or short circuits within the EFI system. Common culprits include a faulty fuel pump that may draw excessive current or rare wiring shorts to ground. Users have noted that even after disconnecting O2 sensors, the EFI fuse issues persisted, suggesting deeper underlying problems. In some cases, replacing the EFI fuse only for it to blow again immediately indicates a persistent issue requiring further investigation. To diagnose the problem, owners are advised to test the power wire to the fuel tank sending unit and check the wiring downstream of the EFI fuse for potential faults. Thorough diagnostic testing is essential to effectively resolve these issues.