AUX Fan Issues - Benzworld.org

shonne · 07-25-2008, 06:53 AM

I recently replaced the water pump. Now, my 1998 e320 runs warm (85-90 C). I noticed the aux fan was not running and the AC blew hot. I replaced a blown 15A fuse and recharged the AC. The AC is now cold and aux fan will come one when the AC is on when it did not before.

I am not sure if I need to replaced the coolant sensor switch and/or thermostat. I read where a coolant sensor switch failure was produce code b1231. How do I pull codes?

Thanks in advance.

shonne · 07-25-2008, 08:54 AM

I pulled the codes and got:

B1459 Series interface (K2) connection to instrument cluster (A1)
B1227 Outside temperature indicator temp sensor (014)
B1232 Refrigerant pressure sensor (B12)
B1234 Sun sensor (B32)
B1235 Emissions sensor (B31)