Cummins ISM CM870 (2003-06) Fault Code: 426 PID: S231 SPN: 639 FMI: 2/2 Communication between the electronic control module (ECM) and another device on the SAE J1939 data link has been lost.
This fault occurs whenever the ECM starts communicating with any other device using the SAE J1939 data link and then can no longer transmit on the data link.
Possible causes:
1)Electrical problems with the SAE J1939 data link wiring such as grounded, shorted, or open circuits
2)The ECM (or another SAE J1939 device) tying up communications by sending too many consecutive messages.
Possible repairs:
1)Clean the connector and pins.
2)Repair the damaged harness connector or pins, if possible.
![Volvo Penta EPC 6 Offline VMware [12.2021] VMware](https://www.ecuforcetruck.com/wp-content/uploads/2022/11/VOLVO-PENTA-2021-A-300x300.jpg)
Related products
-
Allison 1000 & 2000 Gen 4 Fault Codes: P0873 Transmission Pressure Switch Solenoid E Circuit High
1000 & 2000 Gen 4 $50.00 -
-
-
Allison 1000 & 2000 Gen 4 Fault Codes: U1041 J1850 (Class 2) ABS Controller State of Health Failure
1000 & 2000 Gen 4 $50.00 -
Allison 1000 & 2000 Gen 4 Fault Codes: P2771 Four-Wheel Drive Switch Circuit
1000 & 2000 Gen 4 $50.00 -
Bendix ABS EC-30 Fault Code: SID 251 FMI 3
Bendix ABS -
Allison 1000 & 2000 Gen 4 Fault Codes: U0031 J1850 (Class 2) Serial Data Communication Link Low
1000 & 2000 Gen 4 $50.00 -
-
-
-
Allison 1000 & 2000 Gen 4 Fault Codes: P0876 Transmission Reverse Pressure Switch Circuit Stuck Open
1000 & 2000 Gen 4 $50.00 -
-
Allison 1000 & 2000 Gen 4 Fault Codes: P1779 Engine Torque Delivered To TCM Signal
1000 & 2000 Gen 4 $50.00 -
-
