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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 4982
Experience:  Owner at DJ Wilson
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I have a fault code Controller Sht Lo 249s254 04 on a

Customer Question

I have a fault code SAM Controller Sht Lo 249s254 04 on a Cummins ISX 2010 Cascadia also Code SA33 SPN521306 04
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 1 year ago.

Hi my name is***** will be glad to help. Sht Lo 249s254 04 means there is a fault in the Cab SAM controller circuit. Check for interior light bulbs out, blow fuses, inop heated mirrors, etc. I will look into the second code you posted and get back to you. Let me know what you find in the meantime.

Expert:  Daniel Wilson replied 1 year ago.

33

521306

4

conn X12, pin 6

Reading lamp 1, zone 9

– Voltage below normal,

or shorted to low

source

Sleeper lighting

Expert:  Daniel Wilson replied 1 year ago.

This means you have a reading light out in the sleeper.

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