John. Love to help you with that hose. It's certainly not a MAP sensor hose, but the picture isn't good enough to be able go any further than that. Unless it's just some spare hose that got laid in there, it's most likely something important. See if you can get better images.
Because you replaced the DPS, then that's why P0551 and P0552 cleared. Failed Torque Sensor in the DPS.
C1183 is telling you that the Pillion Rider Switch - that round switch that sits under the passenger seat, is shorted to ground. Check your wiring and switch.
Now, the rest of this gets a bit more expensive. C0044 and P0504 are telling you that there is a brake pressure plausibility error between the brake light switch and the VCM. There's a brake line pressure sensor inside the VCM. That's the unit down front that looks like an ABS unit. The VCM is an ABS with a brain. If the brake light switch tells the system that the brakes are on, the system looks at brake line pressure. If that pressure sensor sees brake line pressure, it looks to see if the brake light switch is on. That's the correlation check. If there's a brake light switch on without pressure, or pressure without a brake light switch on, then you get those codes. There's a bit of history that the pressure sensor inside the VCM fails. Typically, it fails high, which would fit all this. So would a failed brake light switch.
On top of that you have C006C, which is a CANBUS communications error with the VCM. My concern is that you need a new VCM, as something has failed internally. Best way to check that is to hook up to BUDS and try to run the VCM, and see if it runs. Also, check that pressure sensor with BUDS. Any of this will cause that warning light to be on. But first, of course, you want to check all of your fuses, including the fuses under the seat; the wiring, and the battery. The vacuum hose may be the least of your problems. Good Luck.