Code : Spn 158 Fmi 2

Ignition Key Switch Fault

Ignition Switch Not Plausible

Ignition Switch Not Plausible: Keyswitch Battery Potential Data Erratic, Intermittent Or Incorrect; Signal Inconsistent (inconsistent Mr->fr)

Keyswitch Intermittent

Kl15 Ignition Switch Status Of Cpc2 And Mcm Do Not Match

Spn 158 Fmi 2 problem code is about Kl15 Ignition Switch Status Of Cpc2 And Mcm Do Not Match. If you don't take the time to look into Spn 158 Fmi 2 engine problem when it arises, it can add up quickly. One small issue like Spn 158 Fmi 2 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: This description 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.

SPNFMI Faults and Engine error code check tool. SPN code listing with names and descriptions.

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