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[Bigkat8]

I am currently on a road trip 2800 miles from home.  I noticed my handle grip slid a half inch or so off the housing...I just slid it back on.
An hour or so later I tried to use my cruise and it didn't work and the check engine light was on.
Codes are p1510 and p1238

Put on at least 200 miles and the engine performance seems normal.

I would hate to waste a day or two taking it to the dealer if I'm going to do no harm... I'm traveling with three other guys and it would really mess up the trip.

Several other threads on the forum with similar issue...

I will copy and paste

Any advice is appreciated...

I'm thinking I potentially could have thrown off the calibration..

[Bigkat8]

 
On a 2011 SESG.  After a handlebar change the check engine light is staying on and it's throwing codes:

P1510 Throttle actuator control limited
P2138 Twistgrop sensor correlation error


I don't have service/diagnostic manuals for anything new enough to be TBW.  And there's only so much one can intuit trying to troubleshoot.  I don't even know, for example, if the "correlation error" is a correlation of voltage across the TGS or a correlation of TGS position versus throttle position.

With the exception of the light and error code the bike actually runs fine.  It's not nor has it been in limp mode.  All the connectors that were disassembled to run the wires in the bars have been rechecked and all are assembled correctly.  It's been running about three weeks since the handlebars were changed.  Just now taking time to get back to it and try to sort it out.

No wires needed to be extended.  So no impedance changes from bad solders or other extensions.  At time of install it all seemed a relatively straightforward installation actually.  Grip sensor was handled delicately and slid in and out with only minimal effort.

Someone with experience with the newer bikes chime in please.  What is the most likely culprit and solution for a bike that seems to run fine but is throwing these codes and has been doing so since the twist grip sensor was removed from one set of handlebars and installed in another as part of a bar swap?

[Bigkat8]

Basically there are two sensors in the throttle. They are 0-5 volt so at idle one reads 0 and the other reads 5 volts. As the throttle is moved each sensor voltages changes but added together they will = 5 volts.

So if one of the sensors runs wild it throws a code. Are you sure the wire were inserted correctly? Like 5 volt and sensor return crossed?

By chance did you do any adjusting on the sensor end plastic piece that meshes with the grip if so may have thrown off the calibration?

[Jory]

I just did the bars on my bike.  Had the same codes. P1238 will cut power to your bike.  Mine problem was a bad conection.  Was easy to fix but time consuming.