Truck is throwing codes!!! HELP!!

[DGFoster]

Can anyone tell me what these codes mean,I don't know why it is running perfect,no engine light or anything. .

Codes are: 1693-1694-1687. Any ideas??

As always thanks for the info. . Dave

 

[klenger]

Try this site...



http://www.batauto.com/Chrysler.html

 

[KatDiesel]

Originally posted by Dodgeboyz

Codes are: 1693-1694-1687. Any ideas??

P1687 - No MIC BUS Message



No CCD/J1850 message recieved from Mechanical Instument Cluster (MIC) module.







P1693 - DTC Detected in Companion Module



Kind of a "mystery" code, it means a DTC was set in both the PCM and ECM, sometimes associated with overboost and sometimes with failed injection pumps depending on who you talk to.







P1694 - Fault in Companion Module



No CCD/J1850 message recieved from the powertrain control module-Aisin transmission



Quick question, have you ever had your truck reflashed for any reason? If so that could be the cause of the codes, when the dealer flashed it they set the codes by mistake (been there done that).

 

[MikeR]

code 1693:"a companion DTC was set on both the ECM and PCM".



code 1694:"bus comunication failure to PCM"



code 1684 ?? it's not listed in my book.



Looks like for some reason the engine computer and powertrain module didn't communicate with each other briefly... bad connection??



Edit: Ha! Kat beat me!

 

[DGFoster]

It was reflashed a few days after I bought it in Jan. 2000 for the PCM, but other than that nothing. It runs perfect.

 

[DGFoster]

Thanks

Thanks for the info,I wont worry about it,it runs perfect