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Author Message   Ferrisanyoneseenferris Posted on Friday, October 04, 2013 - 12:52 pm:        Hi, my 08 Uly has the yellow light (check engine) that stays on until the bike is ready to start. Now its staying on all the time. Any ideas? Do I just need to find someone with a computer who can check codes? Thanks in advance for any help!   Dtaylor Posted on Friday, October 04, 2013 - 01:15 pm:        This thread tells you how to read the code without a computer: http://www.badweatherbikers.com/buell/messages/327 77/146574.html   Froggy Posted on Friday, October 04, 2013 - 01:16 pm:        The light normally comes on when you first turn the key and kill switch to on, but it will shut off in a few seconds. Being that yours is staying on, you have an issue. You don't need a computer to check the codes, but the computer will tell you in plain English what is going wrong. Use a metal clip or something to short the #1 and #2 pins to each other, then turn the key to the on position. The check engine light will flash three times rapidly, pause two seconds, then flash (X) number of times for the first digit, pause two seconds again, then flash (Y) number of times for the second digit, then pause two seconds and flash three times rapidly again. It will repeat over and over again. It may display more than one code in succession. If so, it will pause two seconds between flashing each digit for each code. ie: three flashes - 2 sec. pause - (X) - 2 sec. pause - (Y) - 2 sec. pause - (A) - 2 sec. pause - (B) 2 sec. pause - three flashes ...and so on. The codes are preceded and succeeded by three rapid flashes. If, when you turn the key to the on position, all you get are rapid flashes, there is no trouble code. Here are the codes: Trouble Code XB Trouble Code 1125 Error Byte Error Bit (0-7) Bit Value (dec.) Meaning 11 P0122 0 5 32 TPS Voltage too low P0123 0 6 64 TPS Voltage too high 13 P0151 0 2 4 Rear O2 Sensor always rich P0152 0 3 8 Rear O2 Sensor always lean P0154 0 4 16 Rear O2 Sensor inactive 14 P0117 0 0 1 Engine/Coolant Temp. Sensor Voltage too low P0118 0 1 2 Engine/Coolant Temp. Sensor Voltage too high 15 P0112 1 6 64 Intake Air Temp. Sensor Voltage too low P0113 1 7 128 Intake Air Temp. Sensor Voltage too high 16 P0562 1 4 16 Battery Voltage too low P0563 1 5 32 Battery Voltage too high 21 4 0 1 Exhaust Valve always open 4 1 2 Exhaust Valve always closed 4 2 4 Exhaust Valve Controller Voltage too low 4 3 8 Exhaust Valve Controller Voltage too high 22 P1110 1 6 64 Active Intake Controller Voltage too low P1111 5 7 128 Active Intake Controller Voltage too high P1112 4 4 16 Active Intake Control TPS Feedback Failure 23 P0261 1 2 4 Injector 1 (Front) Control Voltage too low P0262 1 3 8 Injector 1 (Front) Control Voltage too high 24 P2303 2 6 64 Coil 2 (Rear) Control Voltage too low P2304 2 7 128 Coil 2 (Rear) Control Voltage too high 25 P2301 1 0 1 Coil 1 (Front) Control Voltage too low P2302 1 1 2 Coil 1 (Front) Control Voltage too high 26 P1154 5 4 16 Clutch Switch Voltage too low 5 5 32 Clutch Switch Voltage too high 27 P1155 5 2 4 Neutral Switch Voltage too low 5 3 8 Neutral Switch Voltage too high 32 P0264 2 4 16 Injector 2 (Rear) Control Voltage too low P0265 2 5 32 Injector 2 (Rear) Control Voltage too high 33 P0628 2 2 4 Fuel Pump Control Voltage too low P0629 2 3 8 Fuel Pump Control Voltage too high 34 P0506 6 5 32 Idle Air Controller Position too low (RPM too high) P0507 6 6 64 Idle Air Controller Position too high (RPM too low) P0511 6 7 128 Idle Air Controller Circuit Failure 35 2 0 1 Tachometer Output Voltage too low 2 1 2 Tachometer Output Voltage too high 36 P0691 0 7 128 Cooling Fan 1 (Rear/Right) Control Voltage too low 43 P0502 6 2 4 Vehicle Speed Sensor Input Voltage too low P0503 6 3 8 Vehicle Speed Sensor Input Voltage too high 6 4 16 Vehicle Speed Output Voltage too low 44 P1151 3 6 64 Bank Angle Sensor Voltage too low P1152 3 7 128 Bank Angle Sensor Voltage too high 46 P0616 5 0 1 Starter Relay Control Voltage too low 47 P1601 5 1 2 Auxiliary Power Relay Control Voltage too low 52 P0604 3 4 16 ECM RAM Failure 53 P0605 3 3 8 ECM ROM Failure 54 P0603 3 2 4 ECM EEPROM Failure 55 P0607 3 1 2 ECM Microprocessor Failure 54 3 0 1 ECM Sync. Failure P1501 4 5 32 Sidestand Switch Voltage too low P1502 4 6 64 Sidestand Switch Voltage too high P1503 4 7 128 Sidestand Down P0107 8 4 16 Manifold Air Pressure Sensor Voltage too low P0108 8 5 32 Manifold Air Pressure Sensor Voltage too high P2228 8 6 64 Barometric Pressure Sensor Voltage too low P2229 8 7 128 Barometric Pressure Sensor Voltage too high P1047 7 4 32 O2 EGO Correction Cylinder Difference too high P0192 7 2 4 Fuel Pressure Sensor Voltage too low P0193 7 3 8 Fuel Pressure Sensor Voltage too high P0087 7 1 2 Fuel Rail/System Pressure too low P0131 7 5 32 Front O2 Sensor always rich P0132 7 6 64 Front O2 Sensor always lean P0134 7 7 128 Front O2 Sensor inactive P0693 8 0 1 Cooling Fan 2 (Left) Control Voltage too low P0694 8 1 2 Cooling Fan 2 (Left) Control Voltage too high P0337 8 2 4 Crank Position Sensor Voltage too low P0338 8 3 8 Crank Position Sensor Voltage too high 10 1 2 Instrument Cluster Mode Button stuck 10 2 4 Instrument Cluster Toggle Button stuck 10 3 8 Instrument Cluster Low Fuel Light Voltage too low 10 4 16 Instrument Cluster Low Fuel Light Voltage too high 10 5 32 Instrument Cluster Communication Error 10 6 64 Instrument Cluster Oil Pressure Light Voltage Failure 10 7 128 Instrument Cluster Security System Failure Please double-check all information from this site before using them! (Message edited by Froggy on June 12, 2014)   Uly_man Posted on Friday, October 04, 2013 - 02:17 pm:        Did they do a bike with the CEL as yellow?   Froggy Posted on Friday, October 04, 2013 - 02:48 pm:        Yes, all 08+ XB bikes.   Uly_man Posted on Friday, October 04, 2013 - 02:55 pm:        Ah I see the problem. For some reason my 10 bike has an early set of clocks that have a rev limit line at 6k. They must have changed the CEL light color on the latter clocks.   Hughlysses Posted on Friday, October 04, 2013 - 03:32 pm:        It's also worth mentioning that probably the most common culprit for a check engine light is the exhaust servo. Many of these fail due to plastic gears used in the earlier units. If you get the code for that, it's easy to confirm. First remove the outer airbox. Flip the kill switch to off, turn the ignition switch on, rotate the throttle to wide open and hold, then flip the kill switch on while watching the servo. (Do not start the bike.) The servo should cycle to full open and back. If it only opens part-way, if it hesitates while moving, or if it doesn't open at all, you've got a bad servo. You can get the latest replacement with metal gears from American Sport Bike.   Ferrisanyoneseenferris Posted on Friday, October 04, 2013 - 08:28 pm:        Thanks for all this great info guys! Really appreciated, I'll hopefully get to the cause of this quickly.   Ferrisanyoneseenferris Posted on Friday, October 04, 2013 - 08:33 pm:        I should mention that this happened right after I put in my new battery, which was installed after a long bout of trying to get the last junker to work with a trickle charger and not having much success with that. Thanks   Jessemc Posted on Saturday, October 05, 2013 - 12:19 am:        Ferrisanyoneseenferris - I should mention that this happened right after I put in my new battery Exact same thing happened to me recently when I removed and reinstalled the battery after reconditioning it. Bike turned over much better but what the heck was up with the illuminated Vtwin light?! Fortunately, it stayed off the next time I started the bike after a 16 mile commute and sitting all day. I put it down to an ecm "reset" issue of some sort.   Sagehawk Posted on Saturday, October 05, 2013 - 06:31 pm:        Funny you mention ecm reset as after 5 month motor roll, my ecm seemed to not know anything. After broke front plug wire replacement, both cylinders firing, then it still took tps reset several times, idle reset a couple times, and bout 30 mile ride with idle reset. All fell into place then. It acted like a brand new bike with no miles on it.   Tempest766 Posted on Saturday, July 26, 2014 - 03:07 pm:        This process does not work on my 08 XT with the 09 ECU firmware. shorting pins 1 and 2 (vertical on the right side with the plug lock at 12oclock) does absolutely nothing. The lights come on, and the oil and neutral light come on, but no flashes after 8, 10, or 15 seconds.   Xtrmbkr Posted on Saturday, July 26, 2014 - 03:13 pm:        Make sure the kill switch is not in the kill position

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