I have a 1999 E320 RWD. When the A/C is turned on the air blows cold for about 2 - 4 minutes and then it seems that the compressor cuts out and blows warm air. When the car is shutoff and left for 15 - 20 min. the A/C blows cold again. The following are the readings from the car. I am in Canada so the readings are in Celsius?

EC light is not stuck on.
Sensor values:
1 - 25
2 - 26
3 - 24
4 - 24
5 - 64
6 - 72
7 - 09
8 - 41

the error codes are B1227(outside temp), B1234(Sun Sensor).

Does this mean the both sensors are malfunctioning or is there a cause and effect happeniing here?

Any help in identifying the actual issue would be greatly appreciated.

The actual issue is indicated at #5. You have a bad evaporator temperature sensor.

Along with that make sure your AUX fans are turning, if not the refrigerant pressure could be causing the AC compressor to turn off

__________________
Dennis
2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles.
2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner
1997 E300d Silver 300,000 miles As of Jan 05, 2010
3rd owner SOLD

My thanks to both MAtt and e300d97. I wil chack it out and post my findings. The quick response is much appreciated.