2000 Tundra MAF issue

My sons 2000 Tundra 4.7 has been in limp mode. Only codes are P0100 and P0101. Replaced the MAF sensor which did not resolve anything. Checked the plug with a multi meter. Five wires, 2 for the temp sensor which works based on the reader. Out of the three left, I’ve learned one is a ground which I have checked, one is the sensor wire which shows 5v, and the remaining is the power wire but I’m not getting any power. I’ve checked all the fuses I can find. Not sure what else to check or where to look. Maybe someone else has some input or ran into a similar issue.

 

Check for breaks in the power wire, possibly a computer issue?

 

Curious if your reader showed other codes.....oxygen sensors, P0100 ?
P0100 is one of the codes that causes the ECM to enter Fail-safe mode.

The remaining wire should be red in color for your MY. That 12v B+, protected by EFI NO. 2 fuse, feeds all O2 sensors AND the 12V B+ for the Mass Air Flow sensor. Since it tries to run(limp mode), I don't suspect EFI NO. 1 but you could check and make sure.

Engine Bay R/B....