My 2011 RKC went into limp mode and engine light twice at different times. removed/disconnected fuel pak and throttle pak. went back to limp mode without them. bike sat for awhile, now out of limp mode.????? codes that came up 1ST TIME:P1510
P1511

2ND TIME:P0120
P0122
P0220
P0222
P1510
P1511
P2135

Any ideas wtf is happening???

 

There will be many opinions. When that happened to me I pulled off the plug at the Throttle Body, cleaned it put some dielectric grease in the plug and all was well. That was almost 2 years ago. It has not happened since. Can't remember the codes. Search Harley Davidson Tech Tip 418. I have it if you need it, pm me if you need it.

 

You could check this out at least one of the codes apply.

TT418: DTCs P2135 and P2101 Theory and Diagnostics

 

Mine it did twice also, same codes as yours. Dealer replaced the pins on the plug that goes into throttle body, so far so good.

 

Same thing I did, so far hasn't happened again.

 

i installed fuel pak, throttle pak, heated grips , decatted exhaust, a/c. i dont want dealer telling me it was something i did. bike ran fine for months and 2.5k miles after all of this was done.

 

I would look at where the harness plugs into the Throttle body, look for loose or corroded pin's, clean the connector and apply dielectric grease to the connector end and make sure it seats into the throttle body and is fully locked, clear codes and ride the bike to see if any come back, worse case scenario is the connector will have to be replaced, dealer had to replace mine on my 2009 FLHT last year.

P0120 TPS1 Range Error
P0122 TPS1 Low
P0220 TPS2 Range Error
P0222 TPS2 Low
P1510 EFI Limited Performance Mode
P1511 EFI Power Management Mode
P2135 TPS Correlation Error

 

yep. thats what is was. dealer replaced the pins today.

 

Try role playing...it works!