Isuzu Truck Diagnostic Scanners

Written by the YOUCANIC technicians in Towson, Maryland, from the UCAN-HD-A coverage database and our own shop work. Updated October 24, 2026.

The Isuzu N series is the cab over truck behind half the landscapers, box trucks and delivery fleets in the country, and the job that keeps coming back is the DPD: Isuzu's name for the diesel particulate filter. The coverage database behind the UCAN-HD-A lists Isuzu trucks by series (N series, F and G series, C and E series) and year, with the engine control module, transmission, ABS, airbag, body and the MIMAMORI telematics unit, and a long Special Functions list built around DPD regeneration, injector codes and maintenance resets. Pick by what you need to do, then check the connector note.

Which Scanner Do I Need For An Isuzu?

CLASS 4 TO 8 TRUCKS, BUSES, ENGINES AND EQUIPMENT

UCAN-HD-A

Full system heavy duty scanner on SAE J1939, J1708 and J1587 with a wireless VCI and the 9 pin, 6 pin and OBD2 connectors in the case. Reads every Isuzu truck module in the database, runs DPD regeneration, injector programming and the maintenance resets, and graphs live data. Free updates, no subscription. The tool to own if you keep an Isuzu fleet working.

PICKUPS, VANS AND CARS

UCAN-II Pro, new or open box

Full system, bidirectional, lifetime free updates, with a built in TPMS module. The scanner for the pickups, vans and cars that run alongside the trucks. It does not speak J1939 or J1708, so for a mixed fleet you want both.

What The UCAN-HD-A Does On An Isuzu

• ✓ ECU information, Read codes, Erase codes, Live data and Active test on the Engine control module, Transmission control module, ABS, Airbag, Body control module, EBS, Air suspension, Powertrain interface module, Speedometer control device, Hydraulic retarder and the MIMAMORI unit
• ✓ DPD regeneration: DPD regeneration control, DPD normal regeneration control, DPD slow regeneration control, DPD automatic regeneration, Reset diesel particulate diffuser (DPD) regeneration, DPD status resetting
• ✓ Injectors and fuel: Injector programming, Injector ID code, Display injector codes, Injector quantity trim, Fuel supply pump learning resetting, Reset fuel pump correction, Clear injection learned value, Fuel delivery rate data
• ✓ Engine learns: EGR valve zero position learn, Idle air control, Fuel trim reset, Throttle body relearn, Tooth error correction
• ✓ Maintenance: Engine oil exchange reset, Engine oil distance resetting, Engine oil preset interval, Transmission oil distance resetting, Transmission oil preset interval, Alarm of engine oil life mileage, Clear hour meter information
• ✓ Vehicle setup: Program tire size, Tire size programming, Program vehicle type, Engine type programming, Transmission type programming, Final gear ratio programming, Power take off (PTO) requested engine speed
• ✓ Transmission and safety systems: Clear clutch learned values, Clear gear learned values, Clear adaptives, Adjustment radar vertical axis, Radar learning request, Offset steering angle, Electronic stability control and Collision mitigation brake
• ✓ Live data graphed and recorded, PID merge and PDF reports from the tablet

Service Functions By Job On An Isuzu

On the tablet you pick the make, the series and year, then the control unit, the function category and the routine. These are the routines the coverage database lists for Isuzu, grouped by job. Names are as they appear on the tablet. Coverage varies by series, year and ECM software, so check yours before you order.

What The Scanner Sees On An Isuzu

The Isuzu entry in the coverage database, by series, with the systems it lists. The modules present depend on the series, year and options of your truck.

Symptom, Then The Routine That Fixes It

• DPD lamp flashing or a regen request on an N series: DPD regeneration control in the Engine control module, with live data open to watch the temperatures.
• New injectors installed: Injector programming and Injector ID code, then check Injector quantity trim.
• New supply pump: Fuel supply pump learning resetting.
• EGR valve replaced or cleaned: EGR valve zero position learn.
• Oil change done, reminder still on: Engine oil exchange reset.

Frequently Asked Questions

Will it run a DPD regeneration on my Isuzu NPR?

DPD regeneration control, normal and slow regeneration control and DPD status resetting are listed for the Isuzu truck engine control module. Confirm your exact year in the coverage checker before you buy for that job.

What is DPD?

DPD stands for diesel particulate diffuser, Isuzu's name for the diesel particulate filter. The routines work the same way as a DPF regeneration on other makes.

Can it code new injectors?

Yes, on the trucks that list it. Injector programming, Injector ID code and Injector quantity trim are in the engine control module Special functions.

Can it change the tire size or the PTO engine speed?

Program tire size and Power take off (PTO) requested engine speed are listed. Availability depends on the series and year.

Does it program keys?

No. Key and immobilizer work is not what this tool is for. It does diagnosis, live data, active tests and the special functions listed above.

How do I know my exact truck and function are covered?

Use the coverage checker, or call 1-888-959-4265, Monday to Friday 9 AM to 4 PM Eastern, with the VIN, and a technician will tell you plainly. Every scanner also comes with 31 day returns, no questions asked.

For other makes see the scanners by make hub, the service functions explained one job at a time, and the repair guides on youcanic.com.