My 2000 Dodge Ram 5.9 has thrown two codes #71 and #72 indicating problems with the ECM. Am looking for sources to buy a a replacement. Apparently you need the VIN and to have the box programmed for your vehicle. I found one on Amazon for $209.00 that will program your VIN. Are there any other better deals out there or is this a decent find?
Other question is that I need a plenum gasket replacement and understand that you need a shorter bolts for it. Does anyone have the specs for these bolts and a source for them?

 

Solo PCM is reportedly pretty good on customer service, might give them a call.

If you just replace the gasket on the plenum, you can just use some washers on the existing bolts to accomplish the same thing. Otherwise, there are plenty of folks selling 'kits' with the aluminum plenum plate, new bolts, and various other bits and bobs.

 

How/where did you get the codes ? They look like ABS codes in which case replacing the PCM wouldn't do anything.

 

Advanced auto ran the scan and it says code 71 Electronic control unit random access memory read / write malfunction and Code 72 Electronic control unit read only memory checksum malfunction. Thought these were ECM issues?

 

Yea i seem to find the same thing. If it was OBD # code they are to generic anyway you need the "P" codes to tell anything.

 

I am just about to buy a used programmed ECM unless someone else knows more about the Actron Codes 71 and 72?

 

Yeah, 2000 is OBDII, where they are getting two digit codes is a mystery to me.

 

Out of curiosity, what symptoms was the truck exhibiting that caused you to get the PCM scanned for codes?

 

Some googling shows these exact two codes/descriptions mentioned in connection with the ABS module ("CAB"). It's nothing specific to the scan tool. If there are no PXXXX codes from the PCM I would not change the PCM and rather troubleshoot the ABS module. Problem is not many scan tools can clear codes in the ABS module (I assume the ABS light on). I do not know if disconnecting the battery clears ABS codes like it does with PCM codes. Anybody know ?

Edit: See here for more info: https://www.cumminsforum.com/threads...ke-job.392954/

 

For future reference:

Kelsey-Hayes All Wheel EBC 325 (CAB) Antilock Brake System DTCs.
CODE 21 - Right Front Sensor Open.
CODE 22 - No Signal From Right Front Sensor.
CODE 23 - Intermittent Signal From Right Front Sensor.
CODE 25 - Left Front Sensor Open.
CODE 26 - No Signal From Left Front Sensor.
CODE 27 - Intermittent Signal From Left Front Sensor.
CODE 35 - Rear Sensor Open.
CODE 36 - No Signal From Rear Sensor.
CODE 37 - Intermittent Signal From Rear Sensor.
CODE 38 - Wheel Speed Mismatch.
CODE 41 - Right Front Isolation Valve Solenoid Open.
CODE 42 - Right Front Dump Valve Solenoid Open.
CODE 43 - Right Front Isolation Valve Solenoid Shorted.
CODE 44 - Right Front Dump Valve Solenoid Shorted.
CODE 45 - Left Front Isolation Valve Solenoid Open.
CODE 46 - Left Front Dump Valve Solenoid Open.
CODE 47 - Left Front Isolation Valve Solenoid Shorted.
CODE 48 - Left Front Dump Valve Solenoid Shorted.
CODE 51 - Rear Isolation Valve Solenoid Open. - EBC 2
CODE 52 - Rear Dump Valve Solenoid Open. - EBC 2
CODE 53 - Rear Isolation Valve Solenoid Shorted. - EBC 2
CODE 54 - Rear Dump Valve Solenoid Shorted. - EBC 2
CODE 65 - Internal Main Relay Open.
CODE 66 - Internal Main Relay Shorted.
CODE 67 - Pump Motor Circuit Open.
CODE 68 - Pump Motor Stalled - Locked ABS Pump Motor Or Shorted Motor Circuit.
CODE 69 - Excessive Dump Time.
CODE 71 - RAM Read/Write Malfunction.
CODE 72 - ROM Checksum.
CODE 73 - Inoperative Watchdog Inhibit
CODE 74 - System Control Mode Timeout.
CODE 78 - Foundation Brake Partial System Malfunction.
CODE 81 - Brake Lamp Switch Circuit.
CODE 82 - Number of Tone Ring Teeth Out of Range.
CODE 83 - Tire Revolutions Per Mile Out of Range.
CODE 84 - Mismatched VIN.

Kelsey-Hayes Rear Wheel EBC 2 (CAB) Antilock Brake System DTCs.
CODE 35 - Rear Sensor Open.
CODE 36 - No Signal From Rear Sensor.
CODE 37 - Intermittent Signal From Rear Sensor.
CODE 51 - Rear Isolation Valve Solenoid Open.
CODE 52 - Rear Dump Valve Solenoid Open.
CODE 53 - Rear Isolation Valve Solenoid Shorted.
CODE 54 - Rear Dump Solenoid Shorted.
CODE 63 - Shuttled Reset Switch Concern \ Rear Reset Switch Closed
CODE 65 - Internal Main Relay Open.
CODE 66 - Internal Main Relay Shorted.
CODE 69 - Excessive Dump Time.
CODE 71 - RAM Read/Write.
CODE 72 - ROM Checksum.
CODE 73 - Inoperative Watchdog Inhibit
CODE 78 - Foundation Brake Partial System Malfunction.
CODE 81 - Brake Switch Circuit.
CODE 82 - Tone Ring Teeth Factor Out Of Range
CODE 83 - Tire Revolutions Per Mile Factor Out Of Range
CODE 84 - Mismatched VIN