'07 E320 code-9205 B12/2 refrigerant pressure sensor - PeachParts Mercedes-Benz Forum

ROLLGUY · #1 12-14-2017, 11:08 PM

I am trying to get my A/C to work on my '07 E320 Bluetec. Before the collision, the A/C worked flawlessly. After replacing the condenser/drier, I had it charged. The compressor would not turn on, and the red light would blink on the A/C switch. I checked for DTC's in the system, and got the 9205 code. "Refrigerant pressure too low. check refrigerant level. B12/2 (refrigerant pressure and temperature sensor)". I had the refrigerant removed, and replaced the switch. I then had it charged again, and the same code came up. I checked the wiring, and it is intact. I also checked the fuses in the front SAM, and they are all good. I also have no idea what fuse is for what, as the only listing is for the fuse panel to the left of the steering wheel, and in the trunk. I am not sure what to do next. If this was a 123, I would have no problem troubleshooting this problem. This chassis is much more complicated than a 123! Any help would be greatly appreciated. Thanks, Rich