Code P1698

[wingjack]

Went to start the bike this morning, dead battery!  Took the bat out, charged and it came back.  Started the bike, engine light won't go out.  Did the code thing and got P1698, 5 volt sensor supply circuit malfunction.  Bike runs just fine.  Anyone else had this?  Would this cause the dead battery?

[nert]

I would guess that means your computer voltage, due to battery going dead, dropped below 5volts, which is normal automotive computer reference voltage.  The code is probably more a reflection on the fact the battery went dead, rather than the actual cause of the dead battery.
What year TT, a new owner I assume, and did you have the Audio firmware updated? The old firmware is known to cause your battery to randomly go dead, and other times be just fine. Do a search here, you will find lots of info concerning that problem.

[wingjack]

Thanks for the info.  My TT is a 2014 I've had for 2 years 4 months and 20 thousand miles, been trouble free for the most part.  Never had any problem like this before, strange the bat charged up and now seems fine.  I take the key out when shutting down for safety.  Didn't even have the radio on the last time I took a ride.  Will look into that radio thing.  Thanks!

[Coconut]

That DTC is quite usual when the battery gets so low,
and should clear itself from Memory after the requisite number of "No Fault" start ups.

The audio software is the most likely culprit -
a bug in earlier versions resulted in the audio system on US & Canadian market Trophys
equipped with XM radio, not shutting down when the Ignition as switched off and draining the battery.

This is very well documented in this Forum - a software update is required which ressolves the issue.

To check which version of the audio software you have :

With the Ignition ON and the Radio turned OFF
( Volume all the way down to Minimum, Mute and Off ),
Press and hold the "P" button until the "DIAGNOSTICS" menu is displayed.
Scroll to the S/W VERSION item, and press Select.

You need to have Version 1.04E -
If you have anything earlier than this such as 1.04A
then you need to get your Dealer to update it for you.

[wingjack]

Thanks Coconut, you're a great plus on the forum!

[DonTom]

Originally Posted by wingjack

Went to start the bike this morning, dead battery!  Took the bat out, charged and it came back.  Started the bike, engine light won't go out.  Did the code thing and got P1698, 5 volt sensor supply circuit malfunction.  Bike runs just fine.  Anyone else had this?  Would this cause the dead battery?

Until you get the software updated, remove the audio fuse and live without the radio (and GPS if you have one installed running from the Triumph power cable) for a while. This fuse is on the left side of the bike and has a music symbol on top of the fuse cap.  IIRC, it's the third fuse. That will prevent the battery drain problem, but you will have no radio and GPS will only work on internal battery (GPS power comes from the audio module if the Triumph power cable is used for the GPS).

BTW, if you do have such a GPS, it not shutting down with the ignition key shows when you are having  the audio drain problem.

If you want to use the radio before getting the bike fixed with the software update, see here.

Since above works for me and even further reduces battery drain, I never even bothered with the audio software update.  If I ever have my bike in for service, I would then ask them to update it.  But I perhaps will still keep my bike wired as is, as the defaults is the way I always use it anyway (see linked message thread above).

-Don-  Reno, NV

[baz1]

Would disconnecting the battery cause this DTC fault? I had the engine warning light on this morning which disappeared when I started the bike for the third time.

[Coconut]

Disconnecting the Battery wouldn't normally cause this particular Fault Code,
it does often occur if the Main Battery voltage drains "too low" ( Voltage not specified ) -
for example is you leave the Ignition ON for "too long" without starting the engine.

Did you check to see if you had this actual Code ( P1698 ) ?

Many ( not all ) of the DTC's ( Diagnostic Trouble Codes ) will result in the MIL ( Malfunction Indiactor Light /
Engine Management Light ) being illuminated. The MIL will then extinguish after 3 "No Fault" starts,
and the DTC will be storeded in the ECU Memory until there have been 40 "No Fault Starts",
at which time the DTC is erased from the Memory.

Cheers