I just got back off a road trip and right before I got home my Check Engine Light came on constant. I shut off my truck, held the trip reset switch in, turned the key and it went through all the checks and gave me a fault code. Does anyone know where I can get a list of fault codes so I know what is wrong and why myCheck Engine Lightis on?

Thank You

 

What is the code?

 

It said

C-Code
68 04
00 00

 

Here is a link to the list. Good luck. Red

https://dodgeforum.com/m_691136/tm.htm

 

I feel as though I fall under the note because my truck is an '04. I tried thekey on, off, on, off, on and nothing happened. I noticed that whenever I run the trip reset in and turning on the key that the 2nd set of numbers go up by 2. Any idea? It starts out and says "C-CODE", then changes to 68 04 (the 04 is the number that goes up by 2 everytime I do the check, right now it is at 12) and then changes to 00 00. None that match the info that was given. I have never encountered this so I may be talking a little wet behind the ears. I would appreciate any help. Also thank you for the ones that have tried.


'04 Dodge Ram 1500 4X2

 

The instrument cluster actuator test will put the instrument cluster into its self-diagnostic mode. In this mode the instrument cluster can perform a self-diagnostic test that will confirm that the instrument cluster circuitry, the gauges, and the indicators are capable of operating as designed. During the actuator test the instrument cluster circuitry will position each of the gauge needles at various calibration points, illuminate all of the segments in the Vacuum Fluorescent Display (VFD) units, turn all of the indicators on and off again, display any Diagnostic Trouble Code (DTC) information, and display the number of ignition key cycles that have occurred since the DTC was detected. It is suggested that a note pad and pencil be used to write down any fault information that is displayed during the test for reference.
Successful completion of the actuator test will confirm that the instrument cluster is operational. However, there may still be a problem with the PCI data bus, the Powertrain Control Module (PCM), the Engine Control Module (ECM), the Front Control Module (FCM), the Transmission Control Module (TCM), the Transfer Case Control Module (TCCM), the Airbag Control Module (ACM), the Controller Anti-lock Brake (CAB), or the inputs to one of these electronic control modules. Use a DRBIII® scan tool to diagnose these components. Refer to the appropriate diagnostic information.
[ol][*]Begin the test with the ignition switch in the Off position.[*]Depress the odometer/trip odometer switch button.[*]While still holding the odometer/trip odometer switch button depressed, turn the ignition switch to the On position, but do not start the engine.[*]Release the odometer/trip odometer switch button.[*]The instrument cluster will simultaneously illuminate all of the operational segments in both VFD units, perform a bulb check of each operational LED indicator. The VFD segments and LED indicators remain illuminated as each gauge needle is swept to several calibration points and back. If a VFD segment or an LED indicator fails to illuminate, or if a gauge needle fails to sweep through the calibration points and back during this test, the instrument cluster must be replaced. Following these tests, the actuator test will proceed as described in Step 6. [*]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 DRBIII® scan tool to diagnose the problem. Refer to the appropriate diagnostic information.



INSTRUMENT CLUSTER FAILURE MESSAGE

Fault Code
Description
Correction

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
Cargo lamp 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. [*]The actuator test is now completed. The instrument cluster will automatically exit the self-diagnostic mode and return to normal operation at the completion of the test, if the ignition switch is turned to the Off position during the test, or if a vehicle speed message indicating that the vehicle is moving is received from the PCM over the PCI data bus during the test.[*]Go back to Step 1 to repeat the test, if necessary.[/ol]

 

I have an interesting problem with my truck... I have no interior lights door locks ect. I do have power seats working though with the key out of the ignition. all the above work when key is installed and put into the on position. I have checked the iod fuse and all other fuses with multi meter and dismantled the power dist point and checke d for corrosion and poor connections. I have started into the cab now tracing back towards the problem. I am now working on the instrument cluster when driving it works fine all guages work indicator lighs and so on. when I try to do a cluster code read it will not go into diagnostic mode at all i push the odometer button turn key on and nothing. if I continuse to hold the button I get the engine hour meter... I am thinking it is the module within the cluster shoted out or what have you but was wondering if anyone had another check I could try before I got too deep into this.