9855 SPN Fault Code

Name:

Engine Cylinder 1 Timing 3 Pressure

Description:

In-cylinder pressure for Cylinder #1 at user-defined timing location #3 as per SPN 9847. Will report FB00h (64256) when engine is not running.

9855 spn fault code name is Engine Cylinder 1 Timing 3 Pressure. If you don't take the time to look into 9855 spn fault when it arises, it can add up quickly. One small issue like 9855 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 9855 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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