I read several of you talking about the "C" codes. What are these?

 

They are chassis codes. They are also referred to as a soft code.

The text “C Code” is displayed in the odometer
VFD for about three seconds. If there is no stored
fault information, the display will show two pairs of
zeroes in the format “00” “00”, which indicate that
the display of fault information is done. If there is
stored fault information, two sets of two-digit alpha
and alpha-numeric fault codes will appear in the
odometer display for a three second interval. The
first pair of digits represents a Diagnostic Trouble
Code (DTC), or fault code for the instrument cluster.
The second pair of digits is a counter for the number
of ignition key cycles that have occurred since the
displayed DTC was set. The instrument cluster will
continue to display additional sets of two pairs of digits
at three second intervals until all of the stored
codes have been displayed, which is again signaled
by a code of “00” “00”. Refer to the Instrument Cluster
Failure Message table for a description of each
fault code that the instrument cluster displays. If an
instrument cluster fault is displayed, use a DRBIIIt
scan tool to diagnose the problem. Refer to the appropriate
diagnostic information.



How's that?

 

And... the codes...

INSTRUMENT CLUSTER FAILURE MESSAGE
Fault Code Description Correction
01 Airbag warning indicator output circuit shorted.
02 Airbag warning indicator output circuit open.
03 ABS indicator output circuit shorted.
04 ABS indicator output circuit open.
05 MIL indicator output circuit shorted.
06 MIL indicator output circuit open.
Fault Code Description Correction
07 Wait to start indicator circuit shorted.
08 Wait to start indicator circuit open.
0B BTSI output circuit shorted or open.
22 Headlamp switch input circuit shorted.
23 Headlamp switch input circuit open.
24 Turn hazard switch input circuit shorted.
25 Turn hazard swiitch inpot circuit open.
27 Courtesy/dome output circuit shorted or open.
28 Glovebox/map lamp output circuit shorted or open.
29 Cargo lamp output circuit shorted or open.
40 Wiper switch input circuit shorted.
41 Wiper switch input circuit open.
42 Wash/beam input circuit shorted.
60 Passenger door lock switch input circuit shorted.
61 Passenger door lock switch input circuit open.
62 Passenger door lock switch input circuit stuck.
63 Driver door lock switch input circuit shorted.
64 Driver door lock switch input circuit open.
65 Driver door lock switch input circuit stuck.
66 All door lock output circuit shorted to ground or voltage.
67 All door unlock output circuit shorted to ground or voltage.
68 Driver door unlock output circuit shorted to ground or voltage.
6C Driver cylinder lock switch input circuit shorted.
6E Driver cylinder lock switch input circuit stuck.
80 Incorrect odometer value found.
81 Remote radio switch input circuit high.
82 Remote radio switch stuck.
A0 Internal module FLASH memory checksum failure.

A1 Internal module bootloader failure.
A3 Battery voltage open.
A5 TCCM messages not received.
A7 VIN checksum error.
A8 VIN previously stored.
A9 PCI bus internal failure.
AA PCM messages not received.
AB TCM messages not received.
AC ABS messages not received.
AD FCM messages not received.
AE ACM messages not received.
AF SKIM messages not received.
B0 RKE fob batteries low.
B1 RKE module communication link.
00 Done All Diagnostic Trouble Codes (DTC) have been displayed.

 

This is what I am looking for. Thanks for your time.

Bearwhiz

 

This should be put into the DTR WIKI for furture reference

 

And these can be checked by holding the "trip" reset button as you turn your key on.

Shawn

 

OK, I did it and I got the following three codes:


5 127

285

C 447

I have no idea what these mean.

HELP!

bearwhiz

 

In the WIKI

http://wiki.dieseltruckresource.com/..._codes_C_Codes

 

what is the "exact" procedure for accessing codes? thanks in advance

 

Put the key in the ignition. Hold the trip reset down and do not let go. Once you have it held down, turn the key to the on position.

The dash with dance like a chipmunk on a christmas tree, and display your codes if you have any.

 

ok. this is totally different from "cycling" the key 3 times. i'm becoming more and more confused, lol

 

Those are P codes. C codes are what you check by pushing the button like I said, P codes you check by cycling the key.

I guess I could be off base though?

 

kewl. this is the difference. i'm learning. thanks for the info

 

Well now you have me second guessing myself you may want to wait for Madhat to respond

 

out of curiousity, i went and checked for codes that may have been stored on my truck. the findings below are "exactly" what show up on my 06' CTD.

can someone explain what these #'s mean? i studied the list of codes provided, i must be missing something...i have no clue . help needed.
thanks