Hi. I Have c-codes A4 from the dashboard and a P0480(cooling fan 1 control circuit) are they related and what do the c-code mean? Thanks.

 

Several post on these, here is a list I copied from earlier post

C-Codes

01 Airbag warning indicator output circuit shorted. Refer to the appropriate
diagnostic information.
02 Airbag warning indicator output circuit open. Refer to the appropriate
diagnostic information.
03 ABS indicator output circuit shorted. Refer to the appropriate diagnostic
information.
04 ABS indicator output circuit open. Refer to the appropriate diagnostic
information.
05 MIL indicator output circuit shorted. Refer to the appropriate diagnostic
information.
06 MIL indicator output circuit open. Refer to the appropriate diagnostic
information.
07 Wait to start indicator circuit shorted. Refer to the appropriate
diagnostic information.
08 Wait to start indicator circuit open. Refer to the appropriate diagnostic
information.
0B BTSI output circuit shorted or open. Refer to the appropriate diagnostic
information.
22 Headlamp switch input circuit shorted. Refer to the appropriate
diagnostic information.
23 Headlamp switch input circuit open. Refer to the appropriate diagnostic
information.
24 Turn hazard switch input circuit shorted. Refer to the appropriate
diagnostic information.
25 Turn hazard swiitch inpot circuit open. Refer to the appropriate
diagnostic information.
27 Courtesy/dome output circuit shorted or open. Refer to the appropriate
diagnostic information.
28 Glovebox/map lamp output circuit shorted or
open.
Refer to the appropriate diagnostic information.
29 Cargolamp output circuit shorted or open. Refer to the appropriate
diagnostic information.
40 Wiper switch input circuit shorted. Refer to the appropriate diagnostic
information.
41 Wiper switch input circuit open. Refer to the appropriate diagnostic
information.
42 Wash/beam input circuit shorted. Refer to the appropriate diagnostic
information.
60 Passenger door lock switch input circuit
shorted.
Refer to the appropriate diagnostic information.
61 Passenger door lock switch input circuit open. Refer to the appropriate
diagnostic information.
62 Passenger door lock switch input circuit stuck. Refer to the appropriate
diagnostic information.
63 Driver door lock switch input circuit shorted. Refer to the appropriate
diagnostic information.
64 Driver door lock switch input circuit open. Refer to the appropriate
diagnostic information.
65 Driver door lock switch input circuit stuck. Refer to the appropriate
diagnostic information.
66 All door lock output circuit shorted to ground
or voltage.
Refer to the appropriate diagnostic information.
67 All door unlock output circuit shorted to
ground or voltage.
Refer to the appropriate diagnostic information.
68 Driver door unlock output circuit shorted to
ground or voltage.
Refer to the appropriate diagnostic information.
6C Driver cylinder lock switch input circuit
shorted.
Refer to the appropriate diagnostic information.
6E Driver cylinder lock switch input circuit stuck. Refer to the appropriate
diagnostic information.
80 Incorrect odometer value found. Refer to the appropriate diagnostic
information.
81 Remote radio switch input circuit high. Refer to the appropriate
diagnostic information.
82 Remote radio switch stuck. Refer to the appropriate diagnostic
information.
A0 Internal module FLASH memory checksum
failure.
Refer to the appropriate diagnostic information.
A1 Internal module bootloader failure. Refer to the appropriate diagnostic
information.
A3 Battery voltage open. Refer to the appropriate diagnostic information.
A5 TCCM messages not received. Refer to the appropriate diagnostic
information.
A7 VIN checksum error. Refer to the appropriate diagnostic information.
A8 VIN previously stored. Refer to the appropriate diagnostic information.
A9 PCI bus internal failure. Refer to the appropriate diagnostic
information.
AA PCM messages not received. Refer to the appropriate diagnostic
information.
AB TCM messages not received. Refer to the appropriate diagnostic
information.
AC ABS messages not received. Refer to the appropriate diagnostic
information.
AD FCM messages not received. Refer to the appropriate diagnostic
information.
AE ACM messages not received. Refer to the appropriate diagnostic
information.
AF SKIM messages not received. Refer to the appropriate diagnostic
information.
B0 RKE fob batteries low. Refer to the appropriate diagnostic information.
B1 RKE module communication link. Refer to the appropriate diagnostic
information.
00 Done All Diagnostic Trouble Codes (DTC) have been
displayed.

 

You might google and find out what A4 is as I am unsure,,the 46 is just key cycle count and once you get to 99 it will clear if there is no problem , c codes can help but some come on just because of circuit open like dome light is on or door is open or radio is on as some as the A4 could be related to P0480(cooling fan 1 control circuit) the 00 00 Done All Diagnostic Trouble Codes (DTC) have been displayed. means no other codes,,I would fix the fan issue

 

Thanks alot. A4 seem to be a mystery.Ill keep looking.