4338 SPN Fault Code

Name:

Aftertreatment 1 SCR Doser Valve Exhaust Temperature Reduction Request

Description:

Protection request for the doser valve of the SCR system to prevent overheating 000b = no request 001b = reduction request stage 1 010b = reduction request stage 2 011b = reserved for future assignment by SAE 100b = reserved for future assignment by SAE 101b = reserved for future assignment by SAE 110b = error 111b = not available

4338 spn fault code name is Aftertreatment 1 SCR Doser Valve Exhaust Temperature Reduction Request. If you don't take the time to look into 4338 spn fault when it arises, it can add up quickly. One small issue like 4338 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 4338 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.

4338 SPN Fault Code

Name:

Description:

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