OBDSTAR (M064) | Mercury 2+4-pins OBD – 16-pins OBD2 Adapter Cable | Motorboat
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The OBDSTAR M064 is the adapter cable for the 2-pin and 4-pin diagnostic connectors on Mercury marine engines. On the vessel side, both connectors are loose on the cable; the other end terminates in a standard 16-pin OBD2 (J1962)-connector for your OBDSTAR device.
Mercury does not use a single diagnostic connector on its engine units, but rather two small connectors depending on the configuration. With the split cable design, you select on board the connection present on the engine without carrying a second cable. This makes the diagnostic protocols of the outboard or inboard engine accessible to a device with an OBD2 port. The cable establishes the connection to the engine systems; it does not determine what you can perform. That depends on the OBDSTAR device used and the supported software module for Mercury.
KEY BENEFITS
IMPORTANT NOTES
Applications and functionality
Through this connection you access the engine control unit of the Mercury marine engine.
Control units you can reach
- Engine control unit: The engine control unit of the outboard or inboard motor behind the 2- or 4-pin connector.
- Other systems: Whether more than engine control is accessible depends on the engine unit and your device.
What you can do
- Read fault codes: Retrieve stored and active DTCs from the engine control unit for fault diagnosis.
- Clear fault codes: Remove stored fault codes from the engine system after repair or inspection.
- Read live data: View real-time engine parameters such as engine speed, temperature and fuel pressure.
- Access manufacturer protocol: Communicate with the Mercury-specific diagnostic interface via the 2-pin or 4-pin connector on the engine unit.
- Please note: The available function package varies depending on the engine unit and OBDSTAR device.
Compatible vehicles and applications
The connector type on the engine unit is the determining factor, not the engine model. Only Mercury marine engines with a 2-pin or 4-pin diagnostic connector are supported; a list of engine types and model years is not documented.
Mercury Marine:
- Outboard engines: Models with 2-pin or 4-pin Mercury OBD diagnostic connector
- Inboard engines and sterndrive engines (MerCruiser): Models with 2-pin or 4-pin Mercury OBD diagnostic connector
Package contents
- 1x OBDSTAR (M064) | Mercury 2+4-pin OBD – 16-pin OBD2 Adapter Cable | Marine Engine
Technical specifications
| Specification | Description |
|---|---|
| Brand | OBDSTAR |
| Part number | M064 |
| Type | Adapter cable |
| Application | Mercury 2-pin and 4-pin diagnostic connectors |
| Vehicle-side connection | Mercury 2+4-pins OBD (two separate connectors) |
| Device-side connection | 16-pins OBD2 (J1962) |
| Control units | Engine control unit of outboard or inboard marine engine |
| Segment | Marine engine |
| Supported brands | Mercury Marine |
| Model range | Mercury marine engines with 2- or 4-pin connector; production years not documented |
| Required to use | OBDSTAR diagnostic device with marine coverage, such as Marine Master or an IScan variant |
| Additional requirements | None; the cable operates without adapter or power supply |
| Weight | 0.15 kg |






