Bluetooth OBD2 Wireless Scanner Diagnostic Tool, Vehicle Code Reader for Car

Quick take

This compact KEVWR Bluetooth OBD2 scanner is built for DIY drivers who want to read and clear trouble codes and view real-time engine sensor data. It connects to devices over Bluetooth (not Wi-Fi) and supports common OBD2 protocols, but buyer experiences suggest app pairing and compatibility can make or break the experience.

Pros and cons

Pros

  • Reads and clears trouble codes, and supports check-engine light diagnostics
  • Offers real-time engine sensor monitoring (RPM, coolant temperature, vehicle speed, and more)
  • Works with Android, iOS, and Windows devices via Bluetooth
  • Supports multiple OBD2 protocols (J1850 PWM, J1850 VPW, ISO9141-2, ISO14230-4 KWP, CAN-BUS)

Cons

  • Only supports Bluetooth connections, so it may not suit setups that require Wi-Fi
  • Setup depends on the OBD2 app and pairing details, with some users reporting connection/app issues
  • Buyer feedback is mixed on reliability in day-to-day use, so it may not replace a higher-end scanner

What buyers think

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Buyer-review evidence is mixed. Several users describe successful code reading and live data viewing after pairing the adapter with a phone, and they report it can help identify issues behind a check-engine light. Others say the connection process and app compatibility were problematic, with reports of repeated pairing failures or trouble communicating with the vehicle’s ECU. There is also limited-but-serious feedback where a user experienced abrupt driving issues after connecting, followed by a temporary communication problem, though that outcome is not consistent across all reviewers.

What this scanner does (and what it is not)

This is a budget-friendly Bluetooth OBD2 tool intended for everyday DIY diagnostics. It’s designed to plug into your car’s OBD2 port, pair with a compatible device over Bluetooth, and use an OBD2 app to access trouble codes and real-time engine data.

It is not positioned as a professional diagnostic system. If you need advanced diagnostics, deep manufacturer-level troubleshooting, or consistently reliable ECU communication across many vehicle models and apps, you may find that a higher-end scanner is a better fit.

Compatibility and connectivity: the part that matters most

Bluetooth-only connection

The scanner connects through Bluetooth (not Wi-Fi). If your workflow or app preference requires Wi-Fi adapters, this model may not match your setup.

OBD2 protocol support

It supports common OBD2 protocol standards, including J1850 PWM, J1850 VPW, ISO9141-2, ISO14230-4 KWP, and ISO15765-4 (CAN-BUS). In practice, that coverage can help it work across a wider range of vehicles than Bluetooth-only scanners that support fewer protocols, but success still depends on your car’s OBD2 implementation and the app you use.

Pairing and app choice

To use it, you’ll typically need an OBD2 app that can work with this kind of Bluetooth adapter. Reviews indicate that some users had smooth results once paired correctly and selected a compatible app, while other users reported that they could not get apps to connect. That means your biggest “make or break” factor is app compatibility on your specific phone or tablet.

Live data coverage: what you can monitor

The scanner is designed to show real-time engine sensor information. The listed data categories include:

  • Engine RPM and calculated engine load
  • Coolant temperature and intake air temperature
  • Vehicle speed
  • Short-term and long-term fuel trims (including oxygen sensor related short-term fuel trims)
  • Intake manifold pressure
  • Fuel system status and fuel pressure
  • Timing advance and absolute throttle position
  • Air flow rate and related sensor readings

This feature set is geared toward quick “what’s happening right now” checks that can help you interpret a trouble code or verify whether a suspected fix has improved engine behavior.

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Pros and cons for different buyers

Best for

  • Drivers who want a low-cost way to read and clear check-engine codes and sanity-check live sensor data
  • People comfortable troubleshooting app pairing if a specific OBD2 app does not connect
  • DIYers diagnosing common engine-light concerns and monitoring after repairs

Who should avoid or think twice

  • Shoppers who need guaranteed, plug-and-play compatibility with a single specific app
  • Anyone who wants Wi-Fi connectivity rather than Bluetooth
  • Drivers expecting professional-grade diagnostics reliability across many vehicle conditions

Price and availability

This is an inexpensive OBD2 Bluetooth scanner, positioned far below typical professional diagnostic tools. For the most current price and to confirm you’re buying the exact adapter model, use the link below.

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Verdict

If your goal is quick check-engine light code reads and basic live sensor monitoring, this Bluetooth OBD2 scanner can be a practical budget option, especially if you’re willing to experiment with OBD2 apps for reliable pairing. The tradeoff is that user experiences are not uniformly smooth, so it may not satisfy buyers who need consistently dependable connections without any setup friction.

FAQ

What devices does this OBD2 scanner work with?

It’s designed to work with Android, iOS, and Windows devices, using a Bluetooth connection.

Does it support Wi-Fi connections?

No, it supports Bluetooth connections only.

Which OBD2 protocols does it support?

It lists support for J1850 PWM, J1850 VPW, ISO9141-2, ISO14230-4 KWP, and ISO15765-4 (CAN-BUS).

Can it clear trouble codes and turn off the check-engine light?

It’s described as being able to read and clear trouble codes and check the check-engine light using an OBD2 app.

What should I do if it won’t connect to my app?

Try pairing again and confirm you are connecting over Bluetooth (not Wi-Fi). If one OBD2 app does not work, some buyers report switching apps helps.

Is it a good replacement for a professional scan tool?

For basic DIY code reading, it can be useful, but mixed reliability reports and the budget positioning mean it is better viewed as an entry-level tool, not a full replacement for higher-end diagnostic equipment.

Specifications

Product TitleBluetooth OBD2 Wireless Scanner Diagnostic Tool, Vehicle Code Reader for Car, Scan Tool Reset & Clear Check Car Engine Light, Compatible with iOS & Android & Windows
CategoryAutomotive > Tools & Equipment > Diagnostic, Test & Measurement Tools > Code Readers & Scan Tools
BrandKEVWR
ManufacturerKEVWR
Power SourceBattery Powered
Screen Size0.1 Inches
Brand NameKEVWR
Manufacturer Part NumberKEVWRAI