Heres the codes.
20-normal
21-outside air temp sensor
22-inside air temp sensor
23-water temp sensor(eccs one,2pin one on top hose outlet)
24-intake/suction air temp sensor(the one that plays up)#
25-sunload sensor(will display if you test out of sun)
26-pbr(air mix door/hot cold blending flap)
27-refigant temp sensor(other evaporator temp sensor)#
#two sensor plugs behind glove box
system check seqance? spelling?
1-display check
2-sensor check
3-mode door position check
4-actuator opp check
5-sensor recognition temp display check(5-outside,inside,intake,refrigant.)
6-temp adjust for display(knob customer who thinks the temp is diferant from what is displayed),its always out!!
hope that helps
ps.temp sensor resistance:intake and refrigant the same(#)
@20deg 2.65kohms
@10deg 3.99kohms
@0 deg 6.19kohms
so to trick them put a 5kohm resistor across the plug for the sensor so it thinks its about 5deg.