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SPN 4237 – FMI 1 – Adaptive Learn Low Bank 1


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kmw072671

Hi All,

I'm a new Malibu owner of a 2020 22 LSV, bought boat new at dealer last fall and have 20 hours on it so far.  Last weekend a fault code came up on the engine alarm:

SPN 4237 – FMI 1 – Adaptive Learn Low Bank 1 - could the below be the reason of the following issues (running rich):

·        Bad O2 sensor in exhaust

·        Stuck open fuel injector

·        High fuel pressure

The engine diagnostics shows fuel pressure @ 57 psig, I have read 42-45 is normal?  What should it be?

The fault is no longer active so maybe just a fluke?

 

Also, my wedge suddenly does not  auto deploy with the preset for wakesurfing "3".  It did in the past but last weekend just sat in the "lift" position without moving to "3" once under way, any suggestions?

Thanks for any help!

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8 hours ago, kmw072671 said:

The engine diagnostics shows fuel pressure @ 57 psig, I have read 42-45 is normal?  What should it be?

The newer engines are 4 Bar (58.8 PSI) systems, so your pressure is probably OK.

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23LSVOwner

Have your dealer check the ECM calibration version. IIRC there is a fairly new one that addresses that code.

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  • 4 weeks later...

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