Medium and Heavy Trucks
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Code 253-2 is defined as Check Customer or System Parameters.
This indicates something needs to programmed in the Engine ECM. This code is normally seen when a new ECM has been installed. If you have not installed a new ECM. They most likely disconnected the batteries and the ECM lost some of its memory.
Here are the things that need to be programmed to get rid of this code.
"Full Load Setting" (FLS)
You will need to go in ET and look under the configuration screen and check these parameters.
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Thanks for the information.
Yeah I have seen this before. Sometimes when disconnecting the batteries this happens. In order to program the PM, it will take Cat ET and Cat factory passwords. I am sorry I wish it was something easy to do.
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