Hello all,


I did the AC diagnostic and came up with 2 codes: "eb1 227" and "eb1 416". Does anyone have any idea where I can decipher these?

My AC went from normal, to bad, to worse, to hot in the matter of about 2 weeks. #7 on the panel is reading approx 4-8 indicating possible low freon or at least that the pressure is low. So, I went to charge it only finding out that, according to the guage, I am good to go. I still have nothing but hot air through the vents and my AC compressor doesnt appear to be engaging. I am not sure if it is the compressor itself or the "command" signal TO the compressor.

Any help would be greatly appreciated.

John
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Best I could find with a Google search. It looks like you may have a sensor going bad and the coolant circulation pump might be malfunction as well.

EB1 227 - Outside Temp indicator temp sensor (next to drivers side lower fog light. looks like a plastic cone in a metal holder behind black metal grill)

EB1 416 - Coolant circulation pump (in eng area lower passenger side next to headers. has some large hoses on it plastic part)

 

Thank you for the response. I will take a look at the circulation pump tomorrow.
*bump*

 

bump.

 

How do you run a AC diagnostic?

I'm having issues as well on a 1999 230k...

Best

Lee