Coled1001

Hey guys hope all are well was hoping to get some insight on my ac issues with my 97 E 420 with 45000 original miles on it- I have been reading the stickies about AC issues so I decided to run the diagnostics and then post and see what you guys thought prior to going to the Indy-
Heres what I found on the codes
Got a 1227- outside temp indicator
1235- Series Interface K1 connection to Instrument cluster-
cleared these codes they never came back

I ran the other diagnostics and got this: all converted to fahreinheit
1- 84.2
2-80.6
3-87.8
4-87.8
5- 86
6-143.6
7-00
8-80.6
outside temperature is 84-- My compressor is not engaging and my EC light is not in the stuck "ON" position - Any help or thoughts would be greatly appreciate- Thanks Cole

Coled1001

Sorry 1235 is Emissions Sensor B31 and I got the code 1422 which is the Series Interface K1 connection- thanks

Plutoe

Well the bad news is that 7=0, should be 15-17, that typically means that either you have no refrigerant to compress or the compressor can't compress the refrigerant that you have.

Before you do anything take to the AC shop and have them put a set of gauges on to answer the question----all other advice is misinformation and a waste of money!!

kajtek1

Before you fall for commercial spamming - you can buy a can of R134 with dye and dye only at any automotive story and add it to the system, checking pressure #7 for couple of days to see how the system holds.