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2012 Road Glide Ultra. 16K miles. w/Thunder Max ECM. Code U1040 - what is it and what is the solution?

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DTC U1040 indicates that the ABS module is not capable
of sending its state of health message. ( and this makes the ABS Light not flash ) check connections on the Module ...all fuses ...

Possable causes :
Open ABS fuse
Open battery circuit
Open ground circuit
Open serial data circuit
Short to ground in power circuit
ECU malfunction

Posted on Oct 18, 2013


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SOURCE: ultra classic 99 changed air filter to k/n do i

changing the air cleaner is like installing a stage 1 kit, if you have not replaced the exhaust but plan to, do it before you have the ECM redone.

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Quickest solution is to call your Harley dealer service center. My softail battery is under the seat.

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test batt--must be at 12.6 v for proper fire--mite hav a bad one or alternator is failin------get a book on maintenance details

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Max pressure is 50 psi.

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