A Bluetooth 5.1 mini that names its chipset: the B02-KD runs on a dual-board 25K80, talks to iPhone, Android and Windows through YMOBD, and lists diesel cars alongside gasoline.
Most iPhone-ready minis say little about what sits inside. The B02-KD names it: a dual-board 25K80 chipset, the shorthand for the Microchip PIC18F25K80 that the better-regarded ELM327 clones are built on. Put that chip behind a Bluetooth 5.1 radio and you get the chip family Android forums favour on a dongle an iPhone can see.
Dual-board means two stacked circuit boards, one for the OBD side and one for the radio, a layout common on PIC-based clones. The maker's claim is stable data transmission and fewer of the dropouts and delayed data that cheaper wireless adapters show. That matters most on a live-data screen with several gauges refreshing at once.
The pieces that set the B02-KD apart:
Everything else follows the generic OBD-II pattern: all nine standard protocols, coverage for most US vehicles from 1996 and most European vehicles from 2003, and a focus on engine and emissions data. The maker is clear that available functions depend on the make, model, year, engine computer and protocol of each car.
The body measures 1.93 × 1.02 × 1.18 inches and weighs about 0.63 oz, small enough for the glove box or a travel kit.
| Spec | Value |
|---|---|
| Model number | B02-KD |
| Chipset | Dual-board 25K80 |
| Connection | Bluetooth 5.1 |
| iPhone / iPad | Yes |
| Android | Yes |
| Windows | Yes |
| App | YMOBD |
| OBD-II protocols | All nine standard OBD2 protocols |
| Fuel types | 12V gasoline and diesel |
| Vehicle years | Most US vehicles 1996+, most European vehicles 2003+ |
| Code functions | Read trouble codes, show possible causes, clear codes after repair |
| Data | Live engine data, freeze frame, vehicle information |
| Monitoring | Oxygen sensors, battery voltage |
| Scope | Standard OBD2 engine and emissions data |
| Cable | None, wireless to phone, tablet or computer |
| Power | From the OBD2 port |
| Dimensions | 1.93 × 1.02 × 1.18 in |
| Weight | About 0.63 oz |
| Warranty | Replaced for quality defects |
The B02-KD is built around YMOBD, the same free app several iPhone-ready minis use. Setup is three moves: seat the B02-KD in the 16-pin socket below the dash, key on, and link it over Bluetooth from within YMOBD.
On an iPhone, the Bluetooth 5.1 link shows up only inside apps, not in the iOS Bluetooth menu. That is normal for Bluetooth LE devices and the reason these minis reach iOS at all. The ELM327 mini iPhone notes explain the difference from Classic Bluetooth minis.
What YMOBD shows with the B02-KD:
Third-party apps are not named by the maker, but a Bluetooth 5.1 ELM327 mini generally works with apps that offer a Bluetooth LE connection, such as Car Scanner. Try YMOBD first to confirm the dongle and car talk, then add others. The app setup notes cover each app's Bluetooth LE menu.
Diesel is where the B02-KD separates itself from several iPhone-ready minis. The maker designs it for OBD2-compliant 12V gasoline and diesel vehicles, which opens it to diesel owners who found other Bluetooth LE minis aimed only at gasoline cars.
The coverage dates follow the OBD rules in each market: most US vehicles from 1996 onward and most European vehicles from 2003 onward. For a European diesel, check the model year first, since on-board diagnostics arrived later on diesels than on petrol cars.
The checks worth running on a diesel or any older car:
Voltage is worth watching on a car that starts sluggishly on cold mornings. A reading that sags well below its usual resting level hints at a tired battery, and a running reading that stays low points at charging. It is a hint, not a load test.
A sensible first diesel session: read codes with the engine off and ignition on, then start the engine and watch coolant temperature climb, battery voltage settle and any stored freeze frame. That baseline makes later readings easier to judge.
For gasoline-only owners the diesel line is simply a bonus. The same data flows either way, and the car decides which values it reports.
Two minis bring Bluetooth 5.1 to the iPhone, and on the phone side they behave alike: both connect inside YMOBD, both skip the PIN. The differences are on the car side and in what each maker says about the inside.
| B02-KD | ViaBecs | |
|---|---|---|
| Chipset | Dual-board 25K80 | Integrated OBD chipset |
| Systems named | iOS, Android, Windows | iPhone, Android |
| Fuel | Gasoline and diesel | 12V gasoline |
| Extra reads | Battery voltage, O2 sensors | Battery voltage, VIN, CID, CVN |
Which to pick:
The B02-KD is a newer name than the Panlong or Veepeak minis, and its warranty is a replacement for quality defects rather than a fixed term. Weigh that against the named chipset and diesel coverage.
Android-only households have cheaper Classic options, so the B02-KD makes most sense where an iPhone is involved. There, it is the one Bluetooth LE mini in this group that puts a 25K80 name on the box, lists Windows and diesel, and still fits in a travel kit. Anyone upgrading from a Classic mini can keep the old one for an Android tablet and move the B02-KD to whichever car sees the iPhone most.
The pre-order check is short: make sure the car is an OBD2-compliant 12V gasoline or diesel model in the covered years, install YMOBD, and plan a first session in the driveway: codes, then live data, then battery voltage with the engine running.
25K80 is shorthand for the Microchip PIC18F25K80, the chip the better-regarded ELM327 clones use. The B02-KD runs it on a dual-board layout.
Yes. Its Bluetooth 5.1 radio links to YMOBD on iOS, as well as on Android and Windows.
Yes. It is designed for OBD2-compliant 12V gasoline and diesel vehicles, covering most US cars built from 1996 onward and European ones from 2003.
No. It reads standard OBD2 engine and emissions data: codes, live data, freeze frame, O2 sensors and battery voltage.