Yamaha Motorcycle Error Code List
Every Yamaha code we cover, in number order. Open a code to see its likely causes, step-by-step checks and whether it is safe to keep riding.
This list covers Yamaha motorcycles and scooters only. Other Yamaha products, such as ATVs or outboard motors, are not covered, and their codes may mean something different. Newer bikes may also show standard codes such as P0130: search all codes for Yamaha, including standard ones.
Yamaha error code list
| Code | What it means | Risk |
|---|---|---|
| 12 | Crankshaft Position Sensor: No Normal SignalEngine won't start or cuts out | High riskDo not ride until fixed |
| 19 | Sidestand Switch Circuit FaultEngine may stop or refuse to run as if the sidestand were down | High riskDo not ride until fixed |
| 21 | Coolant Temperature Sensor: Open or Short CircuitHard starting or poor running until the engine warms up | Medium riskRide gently, fix soon |
| 22 | Intake Air Temperature Sensor: Open or Short CircuitUsually still runs; may hesitate or use more fuel | Low riskHave it checked soon |
| 24 | O2 Sensor: No Normal SignalUsually still runs; economy and smoothness may suffer | Low riskHave it checked soon |
| 30 | Vehicle Overturned (Lean Angle Cut-Off Activated)Engine stopped after the bike tipped over (safety feature) | Low riskNot a fault — check for damage first |
| 33 | Ignition Coil (Cylinder #1): Primary Circuit FaultMisfire or rough running; a single-cylinder bike usually stops | Medium riskFix soon; single-cylinder bikes may not run |
| 34 | Ignition Coil (Cylinder #2): Primary Circuit FaultMisfire; on the FZ6, cylinders #2 and #3 can drop out together | Medium riskRide gently, fix soon |
| 39 | Fuel Injector: Open or Short CircuitEngine often won't start or run | High riskDo not ride until fixed |
| 41 | Lean Angle Sensor: Open or Short CircuitEngine usually won't run (safety cut-off) | High riskDo not ride until fixed |
| 42 | Speed Sensor: No Normal SignalSpeedometer often stops working | Medium riskRide gently, fix soon |
| 43 | Fuel System Voltage AbnormalEngine may stall or refuse to start | High riskDo not ride until fixed |
| 46 | Abnormal Power Supply VoltageBattery or charging problem; the bike may not restart | High riskDo not ride until fixed |
| 70 | Engine Stopped After Long IdlingEngine stopped after about 20 minutes of idling (not a fault) | Low riskNot a fault |
Risk is a rough guide to whether you can keep riding. Always confirm with a qualified mechanic.
How to read the codes on your Yamaha
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Model pages cover how to read the codes and issues known on that bike.