M-JET DIAGNOSTIC · YAMAHA
Yamaha JetBlaster: Temperature Warning, Check Code 15 and 65
If the JetBlaster reports a temperature, the question is: real heat or false message? M-JET DIAGNOSTIC shows you the values side by side.
What you compare
- Code 15: engine temperature sensor
- Code 65: exhaust manifold water temperature
- Curve at idle, planing and full load
- Battery voltage as a side check
Evaluation
An even rise under load points to too little cooling water: check inlet, pump and hoses. If a single value jumps, its sensor or wire is suspect. That helps you choose the right approach. On real overheating do not ride on.
Related topics
- Yamaha JetBlaster: Check Throttle Response and Throttle Valve
- Buying a Used Yamaha JetBlaster: Check Hours and Memory
- Yamaha WaveRunner Overheating and Temperature Sensor
- Diagnostics and fault codes for your Yamaha model
- All Yamaha WaveRunner diagnostics topics
Everything runs via app over Bluetooth, for Yamaha WaveRunners from model year 2002 to today. Learn more about the M-JET DIAGNOSTIC for Yamaha WaveRunner.
You also ride a Sea-Doo or Can-Am? The M-JET DIAGNOSTIC is available for BRP vehicles too.
