2011 E350 - AC stopped working. DTC 1437, has anyone seen this before?
 

The code reader says “Communication with the air conditioner has a malfunction". I dont know where to start looking, but I am guessing by the pressures that the compressor is not engaging. This happened once when a sensor was unplugged, it just refused to run the compressor. I checked everything I can think of but I have no idea what is supposed to be communicating to the AC.
Can anybody please weigh in on this and suggest something? I have searched EVERYWHERE but I cannot find an explanation for this code.
I am thinking I will have to pay a shop with a more powerful scanner than my Harbor Freight model. It does everything else just fine, but this code does not appear in any documentation I could find.

How many miles are on it? May be compressor time.

You need to have someone plug in that can read all the actual values and parameters for the a/c control module, refrigerant pressure, pressure sensor, evap temp sensor, etc. Otherwise you will just be guessing.

When you hook the right computer to it and it is calling for 100% capacity from compressor and it is still at no compressor running pressure then it is compressor time. As already said get a reader on it that can read all codes and provide real time info.

When you hook the right computer to it and it is calling for 100% capacity from compressor and it is still at no compressor running pressure then it is compressor time. As already said get a reader on it that can read all codes and provide real time info.