M-JET DIAGNOSTIC · YAMAHA
Yamaha GP1300R: Overheat Warning and Exhaust Manifold Temperature
Besides engine temperature, the GP1300R also monitors the exhaust manifold. A warning can therefore come from several places. M-JET DIAGNOSTIC shows you which value is really conspicuous.
What you check
- Code 21: engine temperature sensor
- Code 83: exhaust manifold temperature sensor
- Code 101: exhaust manifold water temperature
- Live values compared: do both temperatures rise evenly?
Even or erratic?
If engine and exhaust manifold temperature rise plausibly with load, the heat is real and you look in the cooling water path. If only one of the values jumps, the associated sensor or its wire is suspect. That protects you from replacing the wrong part. On real overheating do not ride on; shut the engine off.
Related topics
- Yamaha GP1300R Won't Start: Check Ignition, Injectors, Pump
- Used Yamaha GP1300R: Check Engine Hours and Condition
- 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.
