9851 SPN Fault Code


Engine Cylinder Pressure Timing 3


Commanded timing location #3 for in-cylinder pressure reports in ECCP1-20. When the combustion happens after the TDC (Top Dead Center) of this cylinder, the timing is referred in terms of positive angle and if combustion happens before TDC, the timing is referred in terms of negative angle.

9851 spn fault code name is Engine Cylinder Pressure Timing 3. If you don't take the time to look into 9851 spn fault when it arises, it can add up quickly. One small issue like 9851 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 9851 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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