OBDSTAR (M085) | MTU 12-pins OBD – 16-pins OBD2 Adapter Cable | Motorboat
Warranty directly via AsTools
Warranty directly via AsTools
We handle warranty cases ourselves, quickly and without involving the manufacturer. Thanks to our own parts inventory and technical expertise, we can usually assist you immediately. Only in exceptional cases do we still send the product to the supplier.
2 years warranty on all products
2 years warranty on all products
All our products come with a 2-year factory warranty. This ensures you long-lasting quality and service.
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Easy returns
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Professional customer service
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The OBDSTAR M085 connects the round 12-pin MTU diagnostic connector on the engine to a 16-pin OBD2 (J1962)-port for your OBDSTAR diagnostic equipment. The engine-side connector features a cylindrical housing with a locking ring, characteristic of MTU systems in marine environments.
MTU marine engines in motorboat applications lack a standard OBD2 port. This cable remaps the pin configuration from the 12-pin connector to the corresponding OBD2 pins, ensuring communication protocols such as CAN-bus or K-line reach your diagnostic scanner correctly.
What this cable unlocks is the engine control system of your MTU motor: fault codes, engine parameters, and system data. The cable is designed exclusively for OBDSTAR diagnostic scanners and programmers, and the capabilities of your specific device determine what data is actually available.
KEY BENEFITS
IMPORTANT NOTES
Applications and Features
Through the 12-pin connector, you access the engine management system of the MTU marine engine.
Control units you can reach
- Engine management system: the engine control of the MTU marine engine behind the 12-pin round connector.
- Other modules: which additional units are accessible on board depends on your system configuration.
What you can do
- Read fault memory: retrieve stored diagnostic trouble codes from the engine management system to identify faults in engine components.
- Clear fault codes: remove stored codes after diagnosis and repair, with the cable providing the communication link.
- Monitor live data: read real-time engine parameters such as RPM, temperature and pressure via the CAN-bus or K-line connection.
- Marine engine system diagnostics: access to the MTU engine system in motorboat applications via the 12-pin round connector.
- Please note: what you can actually perform depends on the OBDSTAR device and its accompanying software.
Compatible vehicles and applications
The 12-pin round MTU connector is what matters, not the engine type. Compatibility is based on available source data; specific engine models with production years are not listed.
- MTU (Motoren und Turbinen-Union): marine engines with 12-pin round OBD connector, motorboat application
Package contents
- 1x OBDSTAR (M085) | MTU 12-pin OBD – 16-pin OBD2 Adapter Cable | Motorboat
Technical specifications
| Specification | Description |
|---|---|
| Brand | OBDSTAR |
| Part number | M085 |
| Type | Adapter cable |
| Application | MTU 12-pin round diagnostic connector on marine engines |
| Vehicle-side connection | MTU 12-pin OBD |
| Device-side connection | 16-pin OBD2 |
| Communication | CAN-bus and K-line |
| Control units | Marine engine management system |
| Segment | Motorboat |
| Supported brands | MTU (Motoren und Turbinen-Union) |
| Model range | Not limited by model year; determined by the presence of the 12-pin round MTU connector |
| Required to use | OBDSTAR diagnostic scanner with marine coverage, such as the Marine Master or an iScan variant |
| Additional requirements | None; the cable operates without an adapter or power supply |
| Weight | 0.1 kg |






