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Cummins SPN codes

March 24, 2021, 06:32:18 pm

Help Trying to decipher six digit SPN diagnostic codes for CUMMINS 350, 99 U270?
No luck on Cummins website.

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Re: Cummins SPN codes

Reply #1 – March 24, 2021, 07:55:47 pm

Having a all mechanical engine, I have no idea what a "SPN" code is, but despite that handicap...

A Google search came up with this as the first hit:

SPN list - Xee

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Re: Cummins SPN codes

Reply #2 – March 24, 2021, 08:06:15 pm

Thanks, I seen this list.
Most are 3 or 4 digits, mine are 6.
Some manufacturers change or disguise them.
Maybe hidden top secret codes.
I had to google this too .. lol

The Society of Automotive Engineers (SAE) developed the J1939 standards and SPN code terms have been assigned for specific parameters (component or system circuits) that diagnostic trouble codes (DTC) are associated with. ...

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Re: Cummins SPN codes

Reply #3 – March 24, 2021, 08:26:27 pm

What's the code? Spn codes are followed by an Fmi to help in troubleshooting. If you think Cummins have secret codes, you should see what Duetz does.

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Re: Cummins SPN codes

Reply #4 – March 24, 2021, 08:39:29 pm

305152 is one

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