Medium and Heavy Trucks
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Hi my name is***** will be glad to help. ECU and the number after indicates what ECU or module the fault is in. Once you scroll through the next screens you will see the full fault code numbers that will define what circuit the fault is in. What year is this truck ?What engine model?
Thanks for the update. Click on these links for some troubleshooting and informational help. Let me know if you can get the complete fault codes after reviewing these links. The second link may not work on your truck for accessing codes. You may need a scan tool connected if you can not get them from the dash. Let me know
Troubleshooting and info
Fault retrieval post 2005