Engine/Transmission (1998.5 - 2002) Set a code need help.

[Truckie]

I set a code and now the little yellow check engine light stays on now. The code is P1693 looked it up on TMTT siet and got this P1693 (M) DTC Detected in Companion Module A fault has been generated in the companion engine

control module.



P1693 (M) DTC Detected in PCM/ECM or DTC

Detected in ECM

A 9Companion DTC9 was set in both the ECM and PCM.

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[Automated by GetSmile]

Can someone decipher this for me

I have no idea.

Thanks.

MIKE

 

[TORQUE THIS]

After a few cycles of starting, it will go away.



You can also disconnect BOTH batteries, wait 10 minutes, and then rub the drivers side pos and neg together for a few seconds. Reconnect both batteries and all should be fine.



I have had the 1693 code for a long time, never got the check engine light though.

 

[ToolManTimTaylor]

And No other codes Truckie? Thats odd. If the MIL is lit then there HAS TO BE a code. Or a sensor unplugged or damaged. One or the other.



The



A 9Companion DTC9 was set in both the ECM and PCM.



That you gave reference to. Where did that come from? And after the key Cycle Did any Done codes come up?



"P-PCU" "P-DONE" = No codes between Pcu Start And Pcu Finish





"P-ECU" "P-DONE" = No Codes between Ecu Start And Ecu Finish





Sorry to hit ya with all the ????'s

 

[Truckie]

Well I did nothing with the truck for the rest of the night, I didn't even go out and bother to disconnect the batteries. I just said the heck with it I'll deal with it in the morning, and when I went out in the morning and fired it up all was fine, no little yellow engine light and later today the code cleared it self.

Thanks for the help there TORQUE THIS, and ToolManTimTaylor.





I'm just starting to think that somebody at work tried something with my truck while it was sitting there warming up.

What I mean is it was cold out and when I fired the truck up it was sitting there smoking and a few feet away there was two guys I work with loading a truck, after my truck was sitting there a while I had to go to another part of the wharehouse to load another truck. The guy called me and asked me to shut the truck off and I said I would be there in about ten minutes he said OK.

I did turn off the truck, but when I restarted it to go home thats when the light was on, I am just wondering if they tried to stall it out while I was not there, by trying to cover the exhaust pipe. Would that be enough to set a code and make the check engine light come on???

MIKE