You can read the Yamaha WaveRunner fault codes with a Marine Engine Diagnostic System MEDS or CandooPro which are special softwares designed for troubleshooting WaveRunners and other marine engines.

Yamaha waverunner limp mode. Limp home conditions only occur when specific fault Low oil Engine coolant high Exhaust Muffler Temp high low battery voltage become Active but for each one a dedicated warning iCon and a fault code should be displayed in the cluster. I am by no means an expert but Ive read that there may be a heat sensor on these skis that will cause the engine to go into limp mode if the ski overheats or isnt cooled properly. Replied 5 years ago.

Had been running perfectly only used in fresh water and winterised every year. Yamaha waverunner wont idle and losing power L stands for limp mode it is a mode that the ECM selects to prevent serious damage to the engine from you lack of oil. All the instructions show a two wire pigtail but all i can.

Yes that tool is on Yamaha dealer. Ensure the hose connector is properly connected to the engine flushing port. You just have to connect the computer to the engine with the diagnostic cable that comes with the software.

Ive never had mine act up and I have no idea where the sensor is maybe a pro can chime in but just my 02. 1995 Waverunner stuck in limp mode Broke a conrod a year ago and during the past year purchased a new hotrods crank new top end and had a rebore. I am used to that.

Take the WaveRunner out of the water and set it on its trailer. Unable to identify what the issue is but likely that someone more familiar with engines that me would be. I was playing around with the boost controller on my 04 r12x and it got an FI warning.

If it was I would have had to purchase a new remote from the dealer at around 130. Level the WaveRunner to the greatest extent possible whether on the ground or on its trailer. The L-Mode light was not on but perhaps the bulb could have burnt out.