TOPDON Carpal Bluetooth OBD2 Scanner
- All system diagnostics, read and clear codes
- 6 reset services: oil, TPMS, BMS, EPB, throttle, DPF
- Bluetooth 5.0, up to 33 ft range
- iOS 11.0+ and Android 7.0+ app
- 90+ vehicle brands supported
- 1-year warranty
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A pocket Bluetooth scanner that turns a phone into an all system code reader with repair guides and common service resets. Six special functions are excluded from free lifetime use, so check what stays free.
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ASIN: B0D9VPW238Category: Code Readers & Scan Tools
Overview
TOPDON makes the CarPal as a small Bluetooth diagnostic dongle that pairs with a phone app for full system scans. It reads and clears codes, rates fault severity, shows live data and runs battery, smog and performance tests.
Repair guides, service bulletins and a warning light library help DIY owners understand codes, not just read them. Long term access to some functions is limited, per the listing.
Who it's for
Households with several cars and home mechanics doing oil and brake work get scans and resets in one dongle. Shops needing advanced programming need a pro tablet.
Pros and cons
- All system scanning
- Fault severity levels and repair guides
- Common service resets
- Live data graphs
- Six special functions not free forever
- Needs a phone to work
- Confirm brand coverage before buying
Performance notes
The dongle reads the car's diagnostic port and relays data to the phone, where the app interprets codes and graphs live values. AutoVIN identifies the vehicle so menus match the model. Reset services depend on brand support for each function.
Specifications
| Brand | Topdon |
|---|---|
| Dimensions & fit | |
| Item dimensions | 2 × 1 × 3.3 inches |
| Power & efficiency | |
| Power Source | Vehicle |
| Compatibility & installation | |
| Connectivity | Bluetooth 5.0, Up To 33 Ft |
| Included components | |
| Included Components | CarPal, Quick Start Guide |
| Warranty & support | |
| Manufacturer Warranty Description | 1 year |
| Other details | |
| Operating System | IOS 11.0+, Android 7.0+ |
| Vehicle coverage | 90+ brands |
| Reset services | Oil, TPMS, BMS, EPB, Throttle Adaptation, DPF Regeneration |
| Diagnostics | All systems, read and clear codes |
| Tests | Battery, smog pre-check, 0-60 mph performance |
Frequently asked questions
Can I leave the TOPDON CarPal plugged in?
The listing gives no guidance on leaving it connected. It is powered by the vehicle, so unplugging it when not in use avoids battery drain.
Is the TOPDON CarPal app free?
The listing says all functions except 6 special features can be used permanently for free.
Will the TOPDON CarPal work on my car?
It supports more than 90 vehicle brands. TOPDON advises confirming compatibility before purchase.