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Yes, I did and the car turns off immediately. Sorry I didn't include that earlier. Plenum is clear, the pipe from exhaust to EGR is clear also. What senses insufficient flow? On other Toyotas they have an EGR temperature sensor in the valve, which communicates insufficient flow to the ECM.
There isn't a blockage. I can't understand why the code is coming up insufficient flow when there isn't a blockage, and I replaced those parts as indicated earlier.