4421 SPN Fault Code
4421 spn fault code name is Aftertreatment 2 Diesel Exhaust Fluid Concentration. If you don't take the time to look into 4421 spn fault when it arises, it can add up quickly. One small issue like 4421 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 4421 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.
Truck List With 4421 SPN Code :
- Peterbilt 520EV 4421 SPN Code
- International LoneStar 4421 SPN Code
- Tata LPT 1918 5L Turbotronn Cowl 4421 SPN Code
- Ashok Leyland Ecomet 1615 HE 4421 SPN Code
- Volvo FH 520 Puller 4421 SPN Code
- Volvo VNL 630 4421 SPN Code
- Freightliner M2 112 4421 SPN Code
- Peterbilt 340 4421 SPN Code
- International 4400 4421 SPN Code
- Mack GRANITE 64FR 4421 SPN Code