In a Dual Motor System like the Bad Boy Buggie, a PDO (CODE 72 not 1-7 and 2-2)) Timeout error will happen if the controllers do not handshake (talk) to each other within a specific time during power-up. This code could be caused by one of the two units having an internal CAN communication chip issue.
This code could be caused by a broken wire Can HI and CAN LO is wired between the two controllers. Pins 23 & 35.
This code could be caused by one of the two units is not getting powered up. Pin 1 is key switch input. Since both units are showing flash codes, I do not believe this is your issue.
This code could be caused by the jumper missing in the harness or it is bad. Pin 19 is jumpered to B+ on the Master. If jumper open, both units would spit out a PDO Timeout because no control is being the master.
Question is could the mode switch or the forward/reverse switch cause this too? According to the wire diagram the dark green wire runs to pin 19 and the B+ on the master and the switches are on that circuit as well. Can there be voltage at the switch but the ohms be bad?