OBDSTAR (N015A) | Honda 4-pin OBD – 16-pin OBD2 Adapter | Motorboat
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The OBDSTAR N015A is a connector adapter that bridges the 4-pin Honda OBD diagnostic connector on the engine side and a 16-pin OBD2 port (J1962) on the diagnostic tool side. On the engine side, the adapter connects to the four-pin diagnostic connector found on Honda outboard motors, typically located on or near the engine block.
Honda outboard motors don't have a modern OBD2 port—they use their own four-pin connector instead. The adapter consists of two separate plug components that connect to each other and establish the correct pin connections, including the K-line. This enables communication with the outboard engine's control unit; the adapter itself performs no signal processing or protocol conversion.
The adapter simply makes the four-pin port accessible and does nothing more. What you can read out afterward depends on the marine coverage in your own OBDSTAR diagnostic tool. The product information lists no specific engine models or model years—only outboard motors with the 4-pin connector fall within the scope of use.
KEY BENEFITS
IMPORTANT NOTES
Applications and Features
When paired with an OBDSTAR diagnostic tool that includes marine coverage, the adapter provides access to the outboard engine's management system.
Control units you can reach
- Engine Control Unit (ECU): the outboard engine's ECU is accessed via the four-pin diagnostic connector and K-line.
- Additional Systems: the product information does not list any further control units on these engines; assume engine management.
What You Can Do
- Connecting to the 4-pin port: connect the four-pin diagnostic connector to the 16-pin OBD2 input of your diagnostic cable.
- ECU Communication via K-line: make the K-line of the engine control unit available for the protocols your device supports.
- Analyze Fault Codes: read and evaluate error codes from the outboard motor's engine management system.
- Monitor Live Data: retrieve sensor values and engine parameters during operation, as far as your device supports for this engine.
- Important: the adapter itself performs no measurements and carries out no conversion; everything runs through the connected OBDSTAR device.
Compatible Vehicles and Applications
What matters is the 4-pin OBD diagnostic connector on the outboard motor, not the engine type. If there is a four-pin diagnostic connector on or near the engine block, this adapter will connect. The current product information does not provide a detailed list of engine models and model years.
Honda:
- Outboard motors with 4-pin OBD connector: consult the OBDSTAR compatibility list for specific engine models and model years.
Package Contents
- 1x OBDSTAR (N015A) | Honda 4-pin OBD – 16-pin OBD2 Adapter | Outboard Motor
Technical Specifications
| Specification | Description |
|---|---|
| Brand | OBDSTAR |
| Part Number | N015A |
| Type | Adapter |
| Application | Diagnostic connection on Honda outboard motors with 4-pin OBD connector |
| Vehicle-side Connection | Honda 4-pin OBD |
| Device-side Connection | 16-pin OBD2 |
| Communication | K-line (pass-through, no signal processing in adapter) |
| Control Units | Outboard Motor Engine Control Unit (ECU) |
| Segment | Outboard Motor |
| Supported Brands | Honda |
| Model Range | Honda outboard motors with 4-pin OBD connector; no model list provided |
| Required to Use | OBDSTAR diagnostic reader with marine coverage, such as Marine Master or an iScan variant |
| Additionally Required | Standard 16-pin OBD2 cable from your OBDSTAR device |
| Weight | 0.05 kg |






