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- - What do these codes mean (https://www.dieseltruckresource.com/forums/24-valve-engine-drivetrain-89/what-do-these-codes-mean-180044/)

psd tuner

Nov 27, 2007 09:29 PM

What do these codes mean

My smarty says i have 2 codes.

P1693 DTC cleared in companion JTEC module
P0602 ECM fueling calibration error

are these codes harmful and what do they mean?

J Lent

Nov 28, 2007 05:12 PM

Those codes are also known as "Smarty" codes. They are due to the Smarty eliminating torque management & won't harm anything. We all have them! They don't appear on SW2, but anything above that they will.

psd tuner

Nov 28, 2007 06:16 PM

thanks for clearing that up for me!!!

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