5966 SPN Fault Code

Name:

Aftertreatment 1 Diesel Exhaust Fluid Control Module 1 Power Supply 1

Description:

State signal which indicates when the DEF control module power supply of aftertreatment 1 is being driven. On means the ECU is powering the aftertreatment 1 DEF control module power supply. Note that the control module is external to the ECU.00b = Off 01b = On: The ECU is powering the DEF dosing unit power supply 10b = Error 11b = Unavailable

5966 spn fault code name is Aftertreatment 1 Diesel Exhaust Fluid Control Module 1 Power Supply 1. If you don't take the time to look into 5966 spn fault when it arises, it can add up quickly. One small issue like 5966 can cause a larger component to become damaged without taking the time to investigate. If you suspect your truck is suffering from one of these issues, look into replacing those small components to save money down the road.

Note: The name and description of 5966 code represents text descriptions for faults supported by another coding system and does not necessarily comply with SAE J1939. For a specific engine manufacturer's explanation for codes, please consult the engine's technical manual. See also other spn codes.

5966 SPN Fault Code

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