Tech Page
YXZ Fault-Code Quick Reference
Use this guide as a starting point when a diagnostic code appears on your Yamaha YXZ. Record the exact code before disconnecting the battery or beginning repairs.
Important: A fault code identifies the system that needs testing; it does not always mean the named component should be replaced. Inspect wiring, connectors, grounds, battery voltage, hoses, and related components first. For detailed testing and repair procedures, consult the correct Yamaha service manual or a qualified technician.
Engine and ECU Fault Codes
| Code | What it means |
|---|---|
| 08 | Gear-position sensor circuit is open or shorted. (Applies to specified manual-shift models.) |
| 12 | The ECU is not receiving a normal crankshaft-position signal. |
| 13 | Intake-air-pressure sensor 1 circuit is open or shorted. |
| 14 | Intake-air-pressure sensor 1 hose may be clogged, loose, or disconnected. |
| 15 | Throttle-position sensor circuit is open or shorted. |
| 21 | Coolant-temperature sensor circuit is open or shorted. |
| 22 | Intake-air-temperature sensor circuit is open or shorted. |
| 25 | Intake-air-pressure sensor 2 circuit is open or shorted. |
| 26 | Intake-air-pressure sensor 2 hose may be clogged, loose, or disconnected. |
| 30 | A rollover/latch-up condition was detected. |
| 33 | Ignition-coil 1 primary circuit is open or shorted. |
| 34 | Ignition-coil 2 primary circuit is open or shorted. |
| 35 | Ignition-coil 3 primary circuit is open or shorted. |
| 37 | Idle Speed Control system fault. Listen for ISC operation to help determine whether the ISC unit or another component is at fault. |
| 39 | Fuel-injector circuit is open or shorted. |
| 41 | Lean-angle sensor circuit is open or shorted. |
| 42 | Speed-sensor signal is missing, or a neutral/clutch-switch circuit fault was detected (model dependent). |
| 43 | Incorrect supply voltage is reaching the fuel injector or fuel pump. |
| 44 | The ECU encountered an EEPROM read/write error. |
| 46 | Charging-system voltage is outside the normal range. |
| 50 | ECU memory fault. The machine may not display a fault-code number in some cases. |
| 85 | Oil-pressure-switch circuit is open or shorted. |
| 92 | PCV-solenoid circuit is open or shorted. |
YXZ SS Clutch and Shift System Fault Codes
The Sh_ codes below apply to Sport Shift models equipped with the Motor Control Unit (MCU).
| Code | What it means |
|---|---|
| Sh_11 | Charging-system voltage is outside the normal range. |
| Sh_12 | MCU power cut-off function malfunction. |
| Sh_13 | Excess current detected at the clutch-actuator motor. |
| Sh_14 | Excess current detected at the shift-actuator motor. |
| Sh_15 | Fault in the MCU circuit that monitors clutch/shift actuator current. |
| Sh_16 | Abnormal current in a clutch- or shift-actuator motor drive circuit. |
| Sh_17 | Clutch-actuator position reading is incorrect. |
| Sh_18 | Shift-actuator position reading is incorrect. |
| Sh_19 | Shift-actuator sensor voltage is too low or too high. |
| Sh_21 | Gear-position sensor voltage is too low or too high. |
| Sh_25 | Abnormal actuator-drive current detected when the ignition is switched on. |
| Sh_26 | Abnormal clutch movement during startup check; clutch position may not hold. |
| Sh_31 | Engine-speed signal is abnormal. |
| Sh_32 | Vehicle-speed signal is abnormal. |
| Sh_35 | Start-switch signal is abnormal. |
| Sh_36 | Clutch-actuator sensor circuit is open/shorted, or its two signals do not agree. |
| Sh_37 | Power supply to the clutch or shift actuator motor is abnormal. |
| Sh_42 | MCU cannot receive ECU data, or the ECU has reported a malfunction. |
| Sh_44 | Clutch-actuator sensor position is incorrect. |
| Sh_45 | Requested shift and detected gear position do not agree. |
| Sh_46 | Detected gear-position sensor position is incorrect. |
| Sh_48 | Engine idle speed is too high. |
| Sh_49 | Engine speed is too high when starting the vehicle. |
| Sh_51 | Detected shift-actuator sensor position is incorrect. |
| Sh_52 | Main-switch signal is abnormal. |
Need Help?
Email sales@yxzaddicts.com with the fault code, machine year and model, recent repairs or modifications, and a description of what the machine is doing.
Reference: Yamaha 2020-2023 YXZ1000R Series Service Manual, self-diagnostic tables on pages 10-7 and 10-12. This YXZ Addicts guide is a simplified quick reference and is not a substitute for the complete factory service procedure.