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What does the SPN display on Foton vehicles mean?

2 Answers

Pires

09/06/25 7:24am

SPN is a fault code display format specified by SAE. It indicates excessive water content in the fuel filter. The water in the fuel-water separator should be drained, and if drainage is not possible, the fuel-water separator should be replaced promptly. Below is relevant information: 1. Foton Motors: Beiqi Foton Motor Co., Ltd. (referred to as Foton Motors) is a state-controlled listed company that operates across regions, industries, and ownership types. Its headquarters is located in Changping District, Beijing. 2. Fuel-water separator: A fuel-water separator is a device, categorized into catering fuel-water separators and industrial fuel-water separators. Due to environmental requirements, sewage generated by ship machinery discharged into rivers, lakes, and seas must be treated, necessitating the use of industrial fuel-water separators.

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LaNevaeh

09/18/25 7:04am

SPN stands for Suspect Parameter Number, which translates to suspicious parameter number. When this appears on the dashboard of a Foton vehicle, it usually indicates that a certain control system has detected potential issues, such as abnormal parameters in the engine, transmission, or emission system. This situation may occur in trucks or engineering vehicles like Auman, with common causes including sensor failures such as oxygen or oil pressure sensor malfunctions, signal interference due to aging wiring, or occasional false alarms from the computer module. Don't panic when you see the SPN light, but don't ignore it either, as it can affect vehicle performance, fuel consumption, and even excessive emissions. The best approach is to use a professional OBD diagnostic tool as soon as possible to read the specific code, as it will provide more detailed fault locations—for example, SPN 6527 might indicate a turbocharger issue. Regular maintenance checks on electronic system connections can help prevent such alarms. If it suddenly appears during a long-distance drive, it's advisable to pull over safely before addressing the issue to avoid compromising driving safety.

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