Fault codes are never a welcome sight on your dashboard. But even if you take care of your Yamaha sled perfectly, over time, malfunctions may occur.
If you are looking for a Yamaha snowmobile fault code list, you’ve come to the right place.
Besides the code list, we at PowerSportsGuide have also compiled the best tips for diagnosing and clearing these codes!
Yamaha Snowmobile Fault Codes
Without further ado, the official Yamaha snowmobile fault codes and their meanings are as follows:
Yamaha Snowmobile Fault Code List
| Error code/ Fault Code | Sensor | Symptom | Launch | Riding | Self Diagn. Code | Measurements | Indications |
| 12 | Crankshaft sensor | Abnormal crankshaft sensor signal | No | No | _ | ||
| 13 | Intake air pressure sensor No. 1 (1, 2 and 3 cylinders) | Open or short circuit | Yes | Yes | D:03 | Pressure measurement of incoming and atmospheric air | Atmospheric pressure or less than atmospheric |
| 14 | Intake air pressure sensor No. 1 (1, 2 and 3 cylinders) | Hose system malfunction (clogged or disconnected) | Yes | Yes | D:03 | Pressure measurement of incoming and atmospheric air | Atmospheric pressure or less than atmospheric |
| 15 | Throttle position sensor | Open or short circuit | Yes | Yes | D:01 | Throttle angle | 0-125 (15-18 fully open 94-100 completely closed) |
| 16 | Throttle position sensor | Throttle jam | Yes | Yes | D:01 | Throttle angle | 0-125 (15-18 fully open 94-100 completely closed) |
| 21 | Coolant temperature sensor | Open or short circuit | Yes | Yes | D:06 | Coolant temperature measurement | Minimum value -30 |
| 22 | Intake air temperature sensor | Open or short circuit | Yes | Yes | D:05 | Measurement of air temperature in the air filter | Minimum value -30 |
| 25 | Intake air pressure sensor No. 2 (1 cylinder) | Open or short circuit | Yes | Yes | D:04 | Pressure measurement of incoming and atmospheric air | Atmospheric pressure or less than atmospheric |
| 26 | Intake air pressure sensor No. 2 (1 cylinder) | Hose system malfunction (clogged or disconnected) | Yes | Yes | D:04 | Pressure measurement of incoming and atmospheric air | Atmospheric pressure or less than atmospheric |
| 30 | Oil pressure reduction | Engine will stop when pressure build-up is detected | No | No | _ | ||
| 33 | Ignition coil (1 cylinder) | Ignition coil primary wire | Depending on the number of idle cylinders | Depending on the number of idle cylinders | D:30 | Ignition spark test | After switching on, there will be 5 sparks on the candle and a blinking lamp will blink 5 times |
| 34 | Ignition coil (2 cylinder) | Ignition coil primary wire | Depending on the number of idle cylinders | Depending on the number of idle cylinders | D:31 | Ignition spark test | After switching on, there will be 5 sparks on the candle and a blinking lamp will blink 5 times |
| 35 | Ignition coil (3 cylinder) | Ignition coil primary wire | Depending on the number of idle cylinders | Depending on the number of idle cylinders | D:32 | Ignition spark test | After switching on, there will be 5 sparks on the candle and a blinking lamp will blink 5 times |
| 37 | Idle speed control valve | High engine idle | Yes (no if the valve is stuck in the closed position) | Yes | D:54 | Idle valve control | |
| 42 | Speed sensor | Abnormal sensor signal | Yes | Yes | D:07 | Pulse speed measurement | 0-999 (after 999 is reset to 0) is the norm when intentions appear in order? |
| 43 | Fuel system voltage | Electrical power for fuel injectors and fuel pump | Depending on conditions | Depending on conditions | D:09 | Fuel supply voltage measurement | 0-18.7V normal – 12 |
| 44 | CO level adjustment error | CO error detected | Yes | Yes | D:60 | Shows the number of the faulty cylinder | |
| 46 | Snowmobile power supply error (voltage monitoring) | The power of the ECU (computer) is not normal | Yes | Yes | _ | ||
| 50 | ECU memory error | Computer error | No | No | _ | ||
| 81 | Handle heating | Open or short circuit | Yes | Yes | D:57 | Handle heating test | |
| 83 | Gas trigger | Open or short circuit | Yes | Yes | D:27 | Gas trigger heating test | |
| 84 | T.O.R.S | Engine block alarm system malfunction | Yes | No | D:01 | Throttle angle | 0-125 (15-18 fully open 94-100 completely closed) |
| 84 | T.O.R.S | Engine block alarm system malfunction | Yes | No | D:07 | Pulse speed measurement | 0-999 (after 999 is reset to 0) is the norm when intentions appear in order? |
| 84 | T.O.R.S | Engine block alarm system malfunction | Yes | No | D:24 | Throttle position | On – open off – closed |
| 85 | Oil pressure sensor | Open circuit | Yes | Yes | _ | ||
| ER-1 | Internal fault ECU | No signal from computer | No | No | _ | ||
| ER-2 | Internal fault ECU | No signal from the computer for the specified time | No | No | _ | ||
| IS-3 | Internal fault ECU | The data from the computer is not correct | No | No | _ | ||
| ER-4 | Internal fault ECU | No data from the measuring device | No | No | _ | ||
| D:36 d:37 d:38 | Check 1, 2 and 3 injectors | After switching on, the injector will work 5 times (checked by ear) | |||||
| D:50 | Injection system check | After switching on, the injectors will work 5 times (checked by ear) | |||||
| D:52 | Lighting test | Includes lighting | |||||
| D:59 | Checking passenger handle heating | ||||||
| D:61 | Error history | Shows error codes 12-85 | |||||
| D:62 | Erasing error history | Shows the number of errors 00-23 | |||||
| D:70 | Software control code | 00-255 |
Disclaimer: This chart is for informational purposes only! For the exact codes, please check your sled’s service manual.
How to Read Yamaha Snowmobile Fault Codes
Checking the fault code on this chart can only give you a basic idea of the issue. So, if you want to dig deeper, you need to read the fault code with a unique type of software that provides you with a tremendous amount of information on the malfunction.
Generally speaking, you can read the fault codes on your Yamaha snowmobile in two ways. One of your options is to take your sled to an authorized dealer who can read the fault codes for you. If you don’t want to transport your sled to a dealership, your other choice is to invest in diagnostic software.
Let’s drill into the details and see how it works!
Reading Fault Codes on Modern Yamaha Sleds
If you have a modern Yamaha sled with onboard diagnostic ports, you can read the fault codes with a unique tool, known as Y.S.D.T. (Yamaha Snowmobile Diagnostic Tool). As the name suggests, this tool is designed to test and diagnose the computer and related components on Yamaha snowmobiles.
The Y.S.D.T. tool can provide you very valuable information such as:
- Fault codes (a.k.a. DCT – Diagnostic Trouble Codes)
- EFI (Electronic Fuel Injection) data
- Sensor data
- Engine controller identification information
- Offline and online capability
- Live updates
The diagnostic tool comes as a kit with the software and interface hardware, including the diagnostic cable and the harness. How do you set it up?
- As a first step, you have to install the software on a computer, to which the sled’s diagnostic port has to be connected.
- Next, plug the diagnostic cable’s receiver end into the Y.S.D.T. interface hardware, then plug the other end of the cable into the diagnostic connector of the sled.
- As a final step, you have to connect the interface hardware to the computer with a USB cable.
- If the software is running, a window will appear when you connect the cable to the machine.
Once you’ve logged into the software, you can find out about the malfunction and conduct some tests on your sled.
Besides the Y.S.D.T, if you do your research you may find some aftermarket snowmobile diagnostic tools that are compatible with your sled.
Reading Fault Codes on Vintage Yamaha Sleds
If you have an older Yamaha sled that doesn’t feature diagnostic ports, it won’t be compatible with the Y.S.D.T. tool. But don’t worry, as older sleds feature a built-in system designed to inform you about the fault codes.
The fault codes are only displayed on the dashboard or through the check engine light on these sleds. This means that on most older machines, the check engine light is designed to flash in a specific sequence that can give you the fault code.
To decode the flashing check engine light, you should check your sled’s manual.
Here’s an example how a flashing fault code looks on a Yamaha snowmobile:
How to Clear Yamaha Snowmobile Fault Codes
If you have the problems on your sled have been repaired, you probably want to know how to clear the fault codes without taking your sled to the dealer.
For your convenience, we’ve listed a step-by-step guide on how to clear Yamaha snowmobile fault codes:
- Hold the Reset and the Select buttons down.
- Turn on the ignition key.
- Keep holding the buttons down for a few seconds until “Diag” pops up.
- Release the two buttons.
- Depress and hold down the Reset and the Select buttons again until a number appears on the display.
- Use the Select button to scroll through the numbers until you find the number 61.
- #61 is the “Error history,” and shows which error codes have appeared.
- Slide to #62 with the Select button.
- #62 is the “Erasing error history,” which lets you know the number of errors.
- If this number is not zero, on #62, press the hand warmer button back to zero.
- Shut the ignition off, wait a couple of seconds, then turn it on again.
- If the malfunction causing the fault code is no longer present, the codes won’t be displayed any longer.
Disclaimer: This post is for informational purposes only. For more information, please check your sled’s service manual or contact your dealership.
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