3503 SPN Fault Code

Name:

Aftertreatment 2 Air Enable Actuator

Description:

Indicates whether aftertreatment 2 air enable actuator is on or off 00b = not active 01b = active 10b = reserved for SAE assignment 11b = not available

3503 spn fault code name is Aftertreatment 2 Air Enable Actuator. If you don't take the time to look into 3503 spn fault when it arises, it can add up quickly. One small issue like 3503 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 3503 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.

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SPNFMI Faults and Engine error code check tool. SPN code listing with names and descriptions.

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