P1693 codes (SOLO)

[Mopar1973Man]

I'm going to point out to everyone there is NO WAY to have just a P1693 code present during error code dumping. Yes the P1693 is a companion code and has no really meaning but...

"This code indicates there is more code present in the other computer" So if the P1693 is in the P PCU that means there is more codes present in the P ECU. So if there is a P1693 in the P ECU that means there is more codes present in the P PCU. Then even in rare cases seeing the P1693 code in both computers pointing out that both computers have codes. But there is NO WAY for the P1693 to be the only codes present during error code dump. It's totally impossible!

The reason I'm posting this is because it seem like everyone is cancelling out at the first P DONE thinking its done. WRONG! There is TWO computers in the truck.

P PCU = Powertrain Controller Unit (Passenger side firewall)
P ECU = Engine Controller Unit (Driver side of engine block)

You should always see both P PCU and P ECU displayed and 2 P DONE's in the display. If you want to see a video of this and how to properly do it please reffer to my web site and watch the video I produced so you can give us acurrate information on your problems your having with your truck.

Here is the page with the video of how its done...
OBD II Error Codes

Now the other thing is alot of people are getting error code from OBD II sites or from manuals with the scanners. I'll point out that any code over P1000 is a manufacture specific code that only applies to the that make and model of vehicle so please refer to a proper Factory service manual and get the proper codes. I've got some books listed on my site provided by PDFTown.com

Download PDF Dodge Ram 2001 Service Manual | PDFTown.com

As for 2nd Gen 24V error codes I copied the error code listing straight out of the Dodge FSM for our truck and made a short PDF file for viewing...

http://mopar.mopar1973man.com/pdf/error-codes.pdf

This will help us diagnose your problem quickly and properly.

__________________

Michael Nelson - 2002 Dodge Cummins

For Technical Assistance With Your 24V 2nd Generation Cummins - Click Here! Or Search CF.Com for an Answer

Remember to smack the THANKS! button for those that helped you or you think that post is helpful to others!

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Last edited by Mopar1973Man : 04-09-2009 at 09:24 PM.

[rbmchief]

Hey Mike. Good post, I got a question, what if you get a code that clears itself after a few key cycles, will the 1693 still be there untill cleared?

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02 2500 slt 4x4,auto,icebox cai,silencer ring mia, Quad xzt+,jhook, Pinnacle 4" turbo back exhaust,westach elec fuel guage, isspro transtemp,boost,egt guages in pillar, line x in bed, runnin stanadyne. [url]

http://www.cumminsforum.com/forum/wyoming/

[Mopar1973Man]

Once again the P1693 code cannot exist by itself. So if the problem code is gone so is the P1693 code too.

Also take notice the P1693 code NEVER shows up on a hand scanner either it ONLY displayed in the odometer window.

Like this posts...
2001 cummins dead but maybe not

fuel derating at 2000rpm

It gets old... You find out everyone is shutting the key off at the 1st P DONE...

__________________

Michael Nelson - 2002 Dodge Cummins

For Technical Assistance With Your 24V 2nd Generation Cummins - Click Here! Or Search CF.Com for an Answer

Remember to smack the THANKS! button for those that helped you or you think that post is helpful to others!

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Last edited by Mopar1973Man : 04-09-2009 at 10:22 PM.

[Mopar1973Man]

BUMPING TO TOP...

__________________

Michael Nelson - 2002 Dodge Cummins

For Technical Assistance With Your 24V 2nd Generation Cummins - Click Here! Or Search CF.Com for an Answer

Remember to smack the THANKS! button for those that helped you or you think that post is helpful to others!

[blacktravis2733]

Moparman I got one for you, I check my codes with the key trick and was getting a 1693 p-done then back to the trip, I have never gotten more then one p-done before it goes back to the trip, just went out and checked it and the 1693 is gone but I still only get one p-done before it goes back to the trip. am I doing something wrong or worse yet is my truck doing something wrong? One more thing that I would like to pick your brain about, My abs and break lights are on and have been for a few hundred miles but in the last few days they started blinking and when breaking sometimes the pedel gets real stiff and feels like the abs system is kicking (surging) on for a sec. then back to normal breaking then back to the abs stiff pedel and so on and so forth. but after driving for a few tens of miles the lights stop blinking and were back to normal breaking till I shut the truck off, when I turn the truck back on the problam starts all over again.

__________________
2000 dodge 3500 2wd nv5600 airdog 100 stock truck
2002 vw beetle (wifes car) 1.9 tdi 5 speed
1981 benz 300d 5 cyl. '46 dodge rat rod 350 sm465

[Mopar1973Man]

You should still see two listings...

1. P PCU = Powertrain Controller Unit
2. P Done
3. P ECU = Engine Controller Unit
4. P Done

Once again refer to the video on this page...
OBD II Error Codes

So if your seeing the first P PCU and the P1693 is present that means the P ECU has the code. (And visa-versa) So you might have to dig out a scan tool like a ScanGauge II or similar and check for the code.

Still in all the P1693 code will NEVER display in a scan tool and the P1693 code cannot exist by itself.

As for the ABS light blinking that could be a speed sensor going south on you ther is 2 sensors on the front axle (left and right) then 1 sensor in the rear. The rear sensor controls the speedometer. The 3 sensor must all match together other than that the ABS/BRAKE lights are tripped and a P0500 code (in the P PCU) so the P1693 code should be in the P ECU. (Thinking out loud)...

For code to self erase must clear 40 engine warm up cycles without the error tripping again. Engine warm up cycle is starting with coolant temps below 140*F and warming up beyond 160*F.

__________________

Michael Nelson - 2002 Dodge Cummins

For Technical Assistance With Your 24V 2nd Generation Cummins - Click Here! Or Search CF.Com for an Answer

Remember to smack the THANKS! button for those that helped you or you think that post is helpful to others!

[milesdodgeboy]

Originally Posted by Mopar1973Man

You should still see two listings...

1. P PCU = Powertrain Controller Unit
2. P Done
3. P ECU = Engine Controller Unit
4. P Done

Once again refer to the video on this page...
OBD II Error Codes

So if your seeing the first P PCU and the P1693 is present that means the P ECU has the code. (And visa-versa) So you might have to dig out a scan tool like a ScanGauge II or similar and check for the code.

Still in all the P1693 code will NEVER display in a scan tool and the P1693 code cannot exist by itself.

As for the ABS light blinking that could be a speed sensor going south on you ther is 2 sensors on the front axle (left and right) then 1 sensor in the rear. The rear sensor controls the speedometer. The 3 sensor must all match together other than that the ABS/BRAKE lights are tripped and a P0500 code (in the P PCU) so the P1693 code should be in the P ECU. (Thinking out loud)...

For code to self erase must clear 40 engine warm up cycles without the error tripping again. Engine warm up cycle is starting with coolant temps below 140*F and warming up beyond 160*F.

i cycle the key like i'm sposed to, on off, on off, on but it only shows p done once...any idea what i'm doin wrong cuz it just flashes pdone once and goes back to the odometer reading

__________________
01 SO with bad engine knock. replacement 24 valve should be here this week www.myspace.com/milesthehulk for my page

[Mopar1973Man]

So basically you saying that one of the computers is NOT coming on line to dump codes any longer. Now you going to have to watch and se which computer (P PCU or P ECU).

__________________

Michael Nelson - 2002 Dodge Cummins

For Technical Assistance With Your 24V 2nd Generation Cummins - Click Here! Or Search CF.Com for an Answer

Remember to smack the THANKS! button for those that helped you or you think that post is helpful to others!

[milesdodgeboy]

Originally Posted by Mopar1973Man

So basically you saying that one of the computers is NOT coming on line to dump codes any longer. Now you going to have to watch and se which computer (P PCU or P ECU).

see i'm just as confused as you are. it doesn't say p pcu or p ecu. it just starts flashing codes, says p done, thats it

i'm guessing that it's gonna be the pcm codes that i'm seeing since it's the tranny codes and speed sensor codes....i dunno why the hell the ecu codes don't flash lol

__________________
01 SO with bad engine knock. replacement 24 valve should be here this week www.myspace.com/milesthehulk for my page

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Last edited by milesdodgeboy : 04-13-2009 at 10:50 AM.

[milesdodgeboy]

Originally Posted by Mopar1973Man

So basically you saying that one of the computers is NOT coming on line to dump codes any longer. Now you going to have to watch and se which computer (P PCU or P ECU).

hey man sorry i got the codes finally. forgot i had a smarty layin underneath my back seat

__________________
01 SO with bad engine knock. replacement 24 valve should be here this week www.myspace.com/milesthehulk for my page

[Mopar1973Man]

Originally Posted by milesdodgeboy

see i'm just as confused as you are. it doesn't say p pcu or p ecu. it just starts flashing codes, says p done, thats it

i'm guessing that it's gonna be the pcm codes that i'm seeing since it's the tranny codes and speed sensor codes....i dunno why the hell the ecu codes don't flash lol

Something is wrong for sure...

Did someone replace a ECM or PCM module on your truck? Because the 98.5 and the 99 model year truck don't flash code to the odometer window but if some replace a module on you truck and used a older one it could be the cause of it? (Guessin' )

But at this point since the vehicle appears to run normally and not behaving badly I would ignore the problem for the most part and grab a good code reader to keep on hand.

__________________

Michael Nelson - 2002 Dodge Cummins

For Technical Assistance With Your 24V 2nd Generation Cummins - Click Here! Or Search CF.Com for an Answer

Remember to smack the THANKS! button for those that helped you or you think that post is helpful to others!

[Mopar1973Man]

Originally Posted by milesdodgeboy

hey man sorry i got the codes finally. forgot i had a smarty layin underneath my back seat

So what are the codes?

__________________

Michael Nelson - 2002 Dodge Cummins

For Technical Assistance With Your 24V 2nd Generation Cummins - Click Here! Or Search CF.Com for an Answer

Remember to smack the THANKS! button for those that helped you or you think that post is helpful to others!