The JDR050 is a compact SAE J1939 diagnostic trouble code reader designed for diesel engines and generator systems. It allows operators and technicians to quickly view both active and stored ECU fault codes without requiring additional software or complex setup.

With a simple two-button interface and real-time display, the JDR050 provides fast, reliable diagnostics directly from the engine’s electronic control unit (ECU).

Simple, Reliable J1939 Diagnostics

The JDR050 is built for field use where quick access to engine fault codes is critical. Whether you are troubleshooting a generator, maintaining diesel equipment, or diagnosing engine issues on-site, this unit provides immediate visibility into system faults.

Unlike more complex diagnostic tools, the JDR050 is fully self-contained and does not require a laptop, software, or configuration.

Key Features

• Displays active and stored Diagnostic Trouble Codes (DTCs)
• Supports SAE J1939 communication protocol
• Shows numeric values or text translations of fault codes
• No software required – plug-and-play operation
• Compact 2-inch round panel mount design
• IP67 sealed case for harsh environments
• Wide operating range -40°F to 185°F
• Built-in CAN bus termination resistor

Applications

The JDR050 is ideal for:

• Generator service and maintenance
• Diesel engine diagnostics
• Fleet maintenance operations
• Industrial and standby power systems
• Equipment using J1939 ECUs

JDR Series Overview

The JDR050 is part of GAC’s JDR Series of J1939 diagnostic readers.

Other models in the series offer expanded functionality, including:

• Live engine parameter monitoring (JDR100)
• Engine speed control via J1939 TSC1
• Tier IV Diesel Particulate Filter (DPF) regeneration support (IV models)

If you require advanced monitoring or control features, consider upgrading to a JDR100 or TSC1 model.

Specifications

• Operating Voltage: 8–32 V DC
• Current Draw: 0.25A @ 12V
• Protocol: SAE J1939
• Display: 6-digit DTC + alphanumeric field identifiers
• Mounting: 2” (51 mm) round panel
• Environmental Rating: IP67 sealed
• Temperature Range: -40°F to 185°F

Important Note

Connector and wiring harness (EC1331 and CH417-4572) are available separately and are not included with the unit.

Order your JDR050 today or message us to check current availability. Most units ship within 1 business day when in stock.

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