Hey last night I was out riding with some people we ended up going down to DC and got stuck in some traffic. After we got to where we wanted to go I parked and went in. I came out to leave and realized that I had little to no throttle response I could roll the throttle full and barely get the bike to move the engine light was on. I got the bike a couple of blocks away so that I could call someone with a trailer and shut the bike down. I waited about 10 min and started the bike back up and it seemed to be fine has anyone ever had this happen to them

 

What year is it ?

 

Do a search, there are HUNDREDS of threads on this...search 'limp mode'

 

Just went through all of this with my 2010 Street Glide (15,000 Miles)....defective induction module. Got her fixed under warrenty but had to wait a month and a half for the "restricted" part to get to the factory from a new vendor ! Hope your problem is an easier one brother. Good Luck !

 

Happened two years ago to me on the freeway ended up being the TBW connector dealer fixed it under warranty.

 

yea the bike went into "limp mode" there seems to be some problems with the Throttle by Wire systems that are totally random from what I see. I have a throttle position sensor replaced the second time I went to the dealer with the engine light on. I recently had it happen to me again but it seemed to be caused by a "hicup" in the motor. I checked and cleared the codes myself and have had no issues since. Here is the way to check the codes yourself.

Harley Davidson 2008 DTC Code Reading (draft)
Harley Davidson DTC Codes – Unofficial Guide Page 1
The odometer display is capable of displaying DTC's (diagnostic trouble codes). I’ve complied this listing to assist
people in reading their own displays in an emergency situation as it may facilitate getting your motorcycle back on
the road. The information in this document was gathered from various places in the internet and compared to the
service manual for my 2008 Electra Glide. Abbreviations are at the end of this article. While this document may have
errors and omissions, keeping a copy in your owner’s manual or tool pouch might get you out of a bind. Visiting the
dealer is recommended to resolve problems, use this as a last resort.
Procedures
1- Turn Ignition switch to OFF & Run/Stop switch is to Run.
2- Push odometer reset button in & hold.
3- Turn ignition switch to Ignition and release odometer reset button. Background lighting should illuminate,
speedometer needle should sweep its full range and indicator lamps (battery, security, low fuel, check engine and
cruise) should illuminate. This is called a wow test by some companies. The word “diag” should then appear.
4 - Push the odometer reset button once and you will see the selection menu "PSSPt" with the first P flashing.
5 - Each letter represents an area of the diagnostics module. The module that is flashing is the one you are going to
check. To move from one letter (module) to the next, you push the odometer reset button one time. (from P to S to SP
to t and back to P, etc.)
Understanding the codes, there are blocks of trouble codes, assigned as follows;
P = ECM/ICM (Electronic Control Module [EFI] / Ignition Control Module [Carbureted])
S = TSM/TSSM (Turn Signal/ Turn Signal Security Module)
SP = speedometer
T = tachometer
HFSM = Hands Free Security Module (alarm system and anti theft device)
TSM = Turn signal module
6 - To get the DTC within an area of diagnostics, push and hold the odometer reset button in for 5 seconds and release.
If there are any DTC’s the code will be displayed or the word “none” will appear if there are no DTC’s. Push the
odometer reset button again to view additional codes if they exist.
7 - Record the codes, keep a written copy in case the dealer needs them later to solve problems.
8 - If DTC’s are not to be cleared, Press and release the odometer reset button. Part number of module will be displayed.
NOTE: To determine if a code is current or historic, clear the displayed code by pushing in and holding the odometer
reset button ( longer than 5 seconds) until 'clear' comes up. Release the odometer reset button. Turn OFF the ignition
switch. Run your bike and shut it down then recheck the DTC’s again by repeating steps 1 to 9. If the code is current it
will reappear.
9 – Press and release the odometer reset button to continue to the next module.
10 – Turn Ignition switch to OFF.
Harley Davidson 2008 DTC Code Reading (draft)
Harley Davidson DTC Codes – Unofficial Guide Page 2
On models not equipped with a tachometer "No Rsp" will appear when the tachometer identifier is selected.
"No Rsp" will also appear if the run/off switch is in the
off position when doing this procedure.
--------------------------
Priority/DTC/Fault condition
P Codes
P0107 Map Sensor Open/Low
P0108 Map Sensor High
P0117 ET Sensor Low
P0118 ET Sensor High
P0112I AT Voltage Low
P0113I AT Voltage Open/High
P0120 TPS1 Range Error
P0220 TPS2 Range Error
P0122 TPS1 Low
P0123 TPS2 High/Open
P0131 Front Oxygen Sensor Low
P0132 Front Oxygen Sensor High
P0151 Rear Oxygen Sensor Low
P0152 Rear Oxygen Sensor High
P0154 Rear Oxygen Sensor Inactive.
P0222 TPS2 Low
P0223 TPS2 High/Open
P0261 Front Injector Open/Low
P0263 Rear Injector Open/Low
P0262 Front Injector High
P0264 Rear Injector High
P0373 CKP Sensor Intermittent
P0374 CKP Sensor Synch Error
P0444 Purge Solenoid Open/Low
P0445 Purge Solenoid High
P0562 Battery Voltage Low
P0563 Battery Voltage High
P0501 VSS Sensor Low
P0502 VSS Sensor High/Open
P0572 Brake Switch Low
P0577 Cruise Control Input High
P0603 ECM EEPROM Memory Error
P0605 ECM FLASH Memory Error
P06415 V+Vref 1 Out Of Range
P06515 V+Vref 2 Out Of Range
P1001 System Relay Coil Open/Low
P1002 System Relay Coil High/Shorted
P1003 System relay contacts open
P1004 System Relay Contacts Closed
P1009 Incorrect Password
P1010 Missing Password
P1270 TGS Validation Error
P1351 Front Ignition Coil Driver Open/Low
P1352 Front Ignition Coil Driver High/Shorted
P1353 Front Cylinder No Combustion
P1354 Rear Ignition Coil Driver Open/Low
P1355 Rear Ignition Coil Driver High/Shorted
P1356 Rear Cylinder No Combustion
P1357 Front Cylinder Combustion Intermittent
P1358 Rear Cylinder Combustion Intermittent
P1475 Exhaust Actuation Position Error
P1477 Exhaust Actuator Open/Low
P1478 Exhaust Actuator Shorted/High
P1501 Jiffy Stand Sensor Low
P1502 Jiffy Stand Sensor High P1510 EFI Limited
Performance Mode
P1511 EFI Power Management Mode
P1512 EFI Forced Idle Mode
P1514 Air Flow Fault
P1600 EFI Module Processor Internal Error
P2100 EFI Motor Circuit Open
P2101 EFI Motor Circuit Range Performance (Actuation
Error)
P2102 EFI Motor Circuit Low
P2103 EFI Motor Circuit High
P2105 EFI Forced engine shutdown
P2107 EFI Module Processor Internal Fault
P2119 EFI Motor Throttle Body Range Performance
P2122 TGS1 Low/Open
P2123 TGS1 High
P2127 TGS2 Low/Open
P2128 TGS2 High
P2135 TPS Correlation Error
P2138 TGS Correlation Error (Twist grip sensor)
P2176 EFI Closed Position Not Learned
U Codes
U1016 Loss of ECM Serial Data
U1064 Loss of TSM/FSFM Serial Data to ECM
U1097 Loss of Speedometer Serial Data to ECM
U1255 Serial Data Error
U1300 Serial Data Low
U1301 Serial Data High
Harley Davidson 2008 DTC Code Reading (draft)
Harley Davidson DTC Codes – Unofficial Guide Page 3
B Codes
B0563 Battery Voltage High.
B1121(TSM) Left Turn Output Fault
B1121(HFSM) Left Turn Output Open
B1122(TSM) Right Turn Output Fault
B1122(HFSM) Right Turn Output Open
B1123(HFSM) Left Turn Output Short to Ground
B1124(HFSM) Right Turn Output Short to Ground
B1125(HFSM) Left Turn Output Short to Battery
B1126(HFSM) Right Turn Output Short to Battery
B1131(HFSM) Alarm Output Low
B1132(HFSM) Alarm Output High
B1134 Starter Output High
B1135 Accelerometer Failed
B1136(HFSM) Accelerometer Tip Test Error
B1141(TSM) Ignition Switch Low/Open
B1141(HFSM) Ignition Switch Low/Open
B1142 Smart Security System Internal Fault
B1143(HFSM) Security Antenna Short to Ground
B1144(HFSM) Security Antenna Short to Battery
B1145(HFSM) Security Antenna Open
B1151 Bank Angle Sensor(BAS) Short to Ground
B1152 Bank Angle Sensor(BAS) Short to Battery
B1153 Bank Angle Sensor(BAS) High
B1154 Clutch Switch Input Short to Ground
B1155 Neutral Switch Input Short to Battery
Abbreviations
AFR – Air Fuel Ratio
ATS – Air Temperature Sensor
BAS – Bank Angle Sensor
CCM – Cruise Control Module
CKP – Crank Position Sensor. The CKP generates an “AC
signal” which is sent to the ECM where it is used to
reference engine position (TDC) and speed.
DTC – Diagnostic Trouble Codes
ECM – Electronic Control Module. (The Computer)
Computes the spark advance for proper ignition timing
and fuel control based on sensor inputs
(from CKP, MAP & TP sensors) and controls the lowvoltage
circuits for the ignition coils and injectors.
The dwell time for the ignition coil is also calculated in
the microprocessor and is dependent upon battery
voltage. The programmed dwell feature gives adequate
spark at all engine speeds.
ECT – Engine Coolant Temperature. Sensor also controls
the cooling fan relay that provides 12 Vdc to the fans.
EFI – Electronic Fuel Injection
EFP – Electronic Fuel Pump
ET – Engine Temperature sensor
FI – Fuel Injectors
FPR – Fuel Pressure regulator
IAC – Idle Air Control actuator
IAT – Intake Air Temperature sensor
ISS – Ion Sensing System…detonation detection
MAP – manifold Absolute Pressure sensor. The MAP
sensor monitors the intake manifold pressure (vacuum)
and sends the information to the ECM.
The EMC then adjusts the spark and fuel-timing advance
curves for optimum performance.
TP – Throttle Position Sensor
TSM/TSSM (Turn Signal/ Turn Signal Security Module)
VE – Volume Efficiency
VSS – Vehicle Speed Sensor. Used as an input for idle
speed control
__________________

 

Thanks a lot

It is an 09 with under 10k miles, I did do pyo bars about 2 months ago not sure if that could have caused any problems with the tbw system

 

Thanks bouncer for the post. Subscribed.

 

Hey thanks for posting that procedure and all the codes! Good stuff.

 

I have had my throttle go into limp mode on two different days. The first time it was just once. Today it did it 5 seperate times. The bad thing is I use my FLHX as my primary vehicle. I called the dealer and they told me there is an issue that develops when the throttle sensor either on the throttle body or in the handgrip get hot. I dont have problems riding home from work at night but have had them riding to work in the 95 degree afternoon sun. I got the check engine light as well.

I had heard there was a way to get the codes without a reader, thanks Bouncer for posting that info it is going into the database.

I will keep you posted on what the fix is for mine. I know there is a service bulletin out on the throttles, got a copy from a independent bike shop. Sure wont find it on-line anywhere.