Fault overview - as of MY 2002

FAULT OVERVIEW (AS OF MY 2002)

Fault code	Fault text	Fault effect
21	Outside temperature sensor B+/ground short	Substitute value
22	Inside temperature sensor B+/ground short	Substitute value
23	Footwell blower outlet sensor B+/ground short	Substitute value
24	Supply voltage terminal 15 Voltage too high/too low	Function failure
25	Sensor supply voltage (5 V) too high/too low/B+short/ground short	All flaps entered in fault memory System error No control
26	Temperature mixing valve motor Signal implausible	Flap adjustment not possible
27	Central flap motor Signal implausible	Flap adjustment not possible
28	Footwell/defroster flap motor No reaction to activation, signal implausible	Flap adjustment not possible
29	Outside air/recirculation air flap motor No reaction to activation, signal implausible	Flap adjustment not possible
30	A/C No reaction to activation, signal implausible	Air-conditioning failure
31	Fresh-air blower motor Voltage deviation too great/too small	Malfunction
32	Control unit control unit faulty	No control
34	Air-conditioning CAN Bus Off	No communication possible
35	Interface to instrument cluster	Substitute values
36	CAN timeout for instrument cluster	Substitute values
37	CAN signal for PCM	Substitute values
38	CAN timeout for PCM	Substitute values