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...
P1693 Code Explained...
https://mopar1973man.com/cummins/ar.../p1693-dtc-detected-in-companion-module-r138/
"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 canceling 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.
Best to do all your code reading with a quality OBDII code reader. Yes, you can do the key trick for a poor mans method of checking for codes but only the 2002 model year is reliable for dumping all codes. 98.5 and 99 will not work at all. 2000 and 2001 are a 50/50 mix that you might get just the PCM with just a P1693 or see both the PCM and ECM. Hence where the P1693 Code problem stems from. What happens is the key trick will dump P1693 and then flip back to the odometer. So just best to use that quality OBDII code reader.
Now the other thing is a lot of people are getting error code from OBDII 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. Still always best to refer to my code list with just the error numbers. This way you can get the proper diagnostic information for your problem.
The updated error code and diagnostic information...
https://mopar1973man.com/cummins/ar...generation_50/51_engine/obdii-error-codes_94/
This will help us diagnose your problem quickly and properly. :thumbsup:
P1693 Code Explained...
https://mopar1973man.com/cummins/ar.../p1693-dtc-detected-in-companion-module-r138/
"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 canceling 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.
Best to do all your code reading with a quality OBDII code reader. Yes, you can do the key trick for a poor mans method of checking for codes but only the 2002 model year is reliable for dumping all codes. 98.5 and 99 will not work at all. 2000 and 2001 are a 50/50 mix that you might get just the PCM with just a P1693 or see both the PCM and ECM. Hence where the P1693 Code problem stems from. What happens is the key trick will dump P1693 and then flip back to the odometer. So just best to use that quality OBDII code reader.
Now the other thing is a lot of people are getting error code from OBDII 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. Still always best to refer to my code list with just the error numbers. This way you can get the proper diagnostic information for your problem.
The updated error code and diagnostic information...
https://mopar1973man.com/cummins/ar...generation_50/51_engine/obdii-error-codes_94/
This will help us diagnose your problem quickly and properly. :thumbsup:
Updated: 02/08/2016
All links and information is current.
Mopar1973Man
All links and information is current.
Mopar1973Man