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Best Obd Ii Engine System Diagnostic Tools - Holiday Sale

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Last Updated - 16.12.2025

Best Choice

01

Veepeak

Veepeak OBDCheck BLE+ Bluetooth OBD II EOBD Diagnostic Device Adapter Plug Car Diagnostic Scanner for iOS and Android

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Vehicle compatibility - Compatible with petrol vehicles from model year 2001 and diesel vehicles from model year 2004 for general OBD-II functions (check engine light diagnosis). For plug-in hybrid and electric vehicles, please check the app car scanner ELM OBDII and check if there are suitable EV connection profiles or other apps specially designed for electric vehicles. Note: Please make sure your OBD port is in good condition and the device is firmly in place to connect to the vehicle ECU.
Useful for car owners: OBDCheck BLE+ is a small and practical OBD2 diagnostic tool that can work with different third-party apps to achieve different functions. The functions you can get depends mainly on the selected app and your vehicle. Please read the "Instructions for Use" on the detail page "Product Guides and Documents" before purchase or use. [English language not guaranteed].
Note: Currently, no Veepeak app is included with this device; Third party apps are required but not included and must be downloaded or purchased separately from the Play Store or App Store (depending on vehicle and requirements); NOT compatible with pre-2008 or G series models when used with BimmerCode or BimmerLink; NOT compatible with Bluedriver, Carly, MHD, xx. HP, HP, ProTool.
Do more: (advanced features for select vehicles, see image 3 for details) - When used with more professional apps (usually requires a separate purchase), you can get advanced features such as advanced diagnostics* (ABS, airbag, body control, etc.) and manufacturer-specific PIDs (such as transmission temperature, oil pressure), inspect the HV battery in hybrid and electric vehicles, adjust selected vehicles, etc. *To check whether your vehicle for advanced diagnostics, please see the fourth picture on the product page. Note: The oil service light cannot be reset.
Diagnostics of the engine check light (basic functions) - When used with generic OBD II apps such as car scanner ELM OBDII (see picture 2 for more compatible apps), you can read and clear engine diagnostic trouble codes (CEL, MIL, SES), display I/M readiness and sensor values in real time (such as O2 values, engine coolant/oil temperature. air mass flow m, fuel distributor pressure, fuel trimming), which can help you solve simple engine problems.
Device compatibility - Compatible with iOS via Bluetooth LE (do not connect to the device in iOS Bluetooth settings; please connect directly in the OBD2 apps) and Android devices via classic Bluetooth (main units may not be compatible). Detailed instructions on how to connect and troubleshoot iOS and Android can be found in the fifth product image or the user manual. [English language not guaranteed].

45,99 €
Value for Money

02

XTOOL

XTOOL AD20 Pro OBD2 Diagnostic Tool Car Scanner All System Scan, Obd2 Reader with DTC Definition, Oil Reset, 15+ Languages, Voltage Detection, Lifetime Free Updates, for iOS and Android

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Unique gift design: XTOOL AD20PRO fault reader car all cars is a great gift for garage owners, car engineers, professional home mechanics, retired backyard mechanics, DIY beginners and more. Every car owner needs it.
Turn off the engine light and prepare your car for the TÜV test (Smo~g test): XTOOL AD20 Pro car diagnostic device can scan the powertrain module (PCM) to retrieve emission-related diagnostic error codes (DTCs), still images and data streams (PID) to show why the check engine light (MIL) lights up, how severe. The car problem is and how to fix it effectively using possible causes and solutions. This OBD-II diagnostic tool can also prepare your car for the TÜV test with the function to check the readiness status. NOTE: This OBD2 code reader shuts off when the ignition is off.
Track your car's performance: the car diagnostic with code reader works best when paired with your car and connected to the OBD2 port. This unique OBD-II engine system diagnostic tool provides a performance test and ride (analysis) that allows you to track engine performance (acceleration, fuel efficiency), coolant temperature, engine speed, voltage, etc. while sending alerts to your phone once an error code is detected while driving. NOTE: This car code reader shuts off when the ignition is turned off.
Supports German language and wide compatibility, error reader car all cars. The XTOOL Advancer AD20 Pro diagnostic device car supports German. You can switch the device to the German language so you understand everything well, and you can also switch to English, Spanish, French, Italian and other languages, which is convenient for different language groups. The AD20 Pro OBD2 diagnostic tool is suitable for most 12V American cars manufactured after 1996, as well as European and Asian cars manufactured after 2000. 24V heavy duty trucks and motorcycles are not supported. Compatible with iOS and Android system
Full System Scan Tool >> Most OBD2 scanners have only 10 full OBDII functions and cannot diagnose and analyse all systems of your vehicle. XTOOL AD20 Pro car diagnostic device intelligently scans all systems of your vehicle and accesses the deep check function that allows you to thoroughly check vehicle systems such as engine, transmission, brakes, steering, safety, infotainment and more. It reads vehicle information, reads/eliminates codes, turns off warning lights, analyzes all performance changes in text format and gets a complete picture of your vehicle. Read a code once and it pays for itself.
Free lifetime updates and customer service: The XTOOL Advancer AD20 Pro car diagnostics comes with a 2-year warranty, 24/7 technical support and lifetime software updates. If you need any help, please do not hesitate to contact us directly for a quick response. We are always there for you!
Easy to install and use: XTOOL AD20 Pro car diagnostic scanner is equipped with fast BT 5.0 connection, can pair with iOS and Android devices, download the "Advancer AD20" from Google Play or App Store to a wealth of functions, including, check engine light on, full system diagnostics, full OBD2 test modes, etc. This AD20PRO OBD diagnostic tool is a cost-effective way for DIY enthusiasts to read/delete codes before taking it to the dealer. Note: Functions may vary by vehicle. Please send us the FIN and required function before purchase to check compatibility.
Detailed explanation of the error code and the error code warning: the fault reader car all cars has diagnostic functions with error code definitions, which are extremely useful for the car owner to fix vehicle problems or replace faulty components. This odb2 diagnostic tool also has an error warning function. If your vehicle has error codes or the coolant temperature is too high, you will receive alerts on your smart device to understand the fault and ensure safer driving. Note: Reads and clears codes only and does not support system resets. Some DTCs required repair before codes were deleted.
BT connection problem ---- Please check the following cases to determine the cause. ●1. Please check the OS version of your device as the scanner is compatible with Android 4.4+ (64-bit processor) and iOS 11+ devices. (Android devices with 32-bit processor are not compatible because they are relatively old on the market) ●2. Please make sure the dongle is firmly inserted into the OBDII port. ●3. Please make sure the network is stable. ●4. Please make sure the vehicle is started or the ignition switch is set to "ON".

37,99 €
03

Toaluea

Toaluea OBD 2 Bluetooth Holder Diagnostic Tool Car Tool System Motor Electronic

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

OBD 2 Bluetooth Holder Diagnostic Tool Car Tool System Engine Electronic

9,49 €
04

RICOKEY

ELM327 OBD2 Bluetooth Scanner Car Code Reader Reset Auto Diagnostic Scan Tool OBDII Adapter for Android & Windows Devices Check Engine Light for Cars, with Torque Pro APP

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Various free apps: support for iOS, iPhone, Android and Windows devices. The free app "Torque, Mini ODBII, DashCommand, OBD Fusion, OBD Car Doctor, TPMS and Car Scanner" works perfectly for Android phone/tablet.
Universal compatibility: works with both vehicles that are OBDII protocols vehicles from 1996 onwards in the USA, 2003 in Europe. Whether your vehicle is with petrol, 12V diesel, new or old, our OBD2 reader works with it.
Supports ALL 9 OBDII protocols: J1850 PWM, J1850 VPW, ISO9141-2, ISO14230-4 KWP, ISO15765-4 (Can-BUS). Full System Scan Tool. Not applicable to airbags/ABS/SRS/TPMS/OIL.
Monitor & Analyzer:Top Bluetooth OBD2 Adapter,Read Engine Diagnostic Trouble Codes Quickly, Clear Codes, Check Engine Light (CEL), Check if your vehicle is ready for smog check, Turn off MIL, display the sensor readings in real time with your phone or tablet. Save money by fixing car problems quickly and accurately yourself.
Intelligent diagnostic functions: read and clear error codes, immediately display their meaning (over 3000 generic code definitions in the database). Displays current sensor data (engine speed, calculated load value, coolant temperature, fuel system status, vehicle speed, fuel trim, intake manifold pressure, timing lights/flow, air flow, intake air temperature, absolute throttle position, oxygen sensor.

12,99 €
05

vLinker

vLinker BM+ OBD2 Bluetooth Diagnostic Scan Tool, OBDII Car Scanner for iOS, Android, and Windows - Made for BimmerCode

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

vLinker BM+ Bluetooth is available for over-voltage, over-current, over-temperature and battery discharge protection.
vLinker BM OBD2 Bluetooth turns your iOS (BLE), Android device or Windows PC into a professional diagnostic scan tool.
Updated version of iCar Pro Bluetooth, specially designed for coding APP BimmerCode, which requires a large amount of data transfer.
The vLinker BM+ Bluetooth OBD2 Scanner does not discharge the battery when you leave it connected. Operating current is 51 mA, automatic sleep in sleep state, sleep current is as low as 3 mA.
Support firmware upgrade: please contact our vLinker Direct team.
100% coverage of vehicles supported by BimmerCode. Support TP transmission protocol, ensure wireless communication security.

36,95 €
06

Veepeak

Veepeak Mini Bluetooth OBD2 Scanner Diagnostic Tools Car Diagnostic Engine Code Reader for OBD II/EOBD Vehicles for Android

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Save time and money by finding out why the engine indicator light lights up, and fix simple car problems yourself! Read engine diagnostic fault codes, reset engine light and check if your vehicle is ready for emission testing.
Not compatible with iPhone or iPad! Only works with Android devices and Windows PCs. Very useful tool for car owners to diagnose engine light and monitor vehicle performance.
Compatible with cars and light trucks since year 2001 (petrol) or 2004 (diesel) in EU (domestic and imported). -
Access a whole new world of information about your vehicle directly on your phone or tablet. Display sensor data (engine coolant and oil temperature, O2 values, air mass flow, fuel adjustment, etc.), monitor fuel consumption, create your own dashboard and more.
A third-party OBD2 app is required. Turn your phone or tablet into a sophisticated diagnostic scan tool.

17,99 €
07

Veepeak

Veepeak OBDCheck BLE/Bluetooth 4.0 OBD II Car Diagnostic Tool, Diagnostic Code Reader, Scanner, Compatible with iOS and Android

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Vehicle compatibility: Compatible with petrol vehicles from model year 2001 and diesel vehicles from model year 2004 in the EU and UK (only for basic functions; advanced features are only available for select vehicles via advanced apps). For plug-in hybrid and electric vehicles, please check the Car Scanner ELM OBDII app and check if there are suitable EV connection profiles or if there are other apps specially designed for electric vehicles.
Please read before purchasing: OBDCheck BLE is a small and practical OBD2 diagnostic tool that can work with different third-party apps to achieve different functions. The functions you can get depends mainly on the selected app and your vehicle. Please check the compatibility and app information in the product images and read the instructions for use found in the product guides and documents (English language not guaranteed) before purchase or use.
Important note: Not compatible with pre-2008 or G-series models when used with BimmerCode or BimmerLink. Currently, no Veepeak app is included with this device; third-party apps are required but not included and must be downloaded separately or purchased from the Play Store or App Store (depending on vehicle and requirements); not compatible with Carly, MHD, xHP, ProTool apps.
Device compatibility: Compatible with iOS via Bluetooth LE (do not pair the device in iOS Bluetooth settings; please connect directly in the respective OBD2 app), and with Android devices via classic Bluetooth (head unit compatibility not always ensured). Detailed instructions for connecting and troubleshooting for iOS and Android can be found in the fifth product image or user manual.
Basic functions (for diagnosing the check engine light on OBD II-compatible vehicles). When used with generic OBD II apps such as Car Scanner ELM OBDII (see picture 2 for other compatible apps), you can read and clear diagnostic issue codes related to the check engine light (CEL, MIL, SES), snapshot data, display I/M readiness and sensor values in real time (generic OBD PIDs such as engine coolant/oil temperature, mass air flow, fuel trim falues), which can help you solve simple engine problems.
Advanced features (for select vehicles, see image 3 for details): When used with more professional apps (usually requires a separate purchase), you can get advanced features such as advanced diagnostics* (ABS, airbag, chassis control, etc.) and manufacturer-specific PIDs (such as transmission temperature, oil pressure), inspect the HV battery in hybrid and electric vehicles, adjust selected vehicles, etc. *To check whether your vehicle is compatible with the advanced diagnostics, please see the fourth picture on the product page. Note: The oil service light cannot be reset.

35,99 €
08

smtfcty

OBD 2 Diagnostic Device Car Adapter WiFi OBD Diagnostic Device Compatible with iOS, iPhone, iPad and Android, OBD 2 Bluetooth Adapter OBD Car Diagnostic Device for All OBD 2 Protocol Vehicles

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Various free apps: Support for all Android devices and Windows PCs (for Samsung LG 2 Google Nexus etc.). The free app "Torque" & "DashCommand" works perfectly for Android phone/tablet. It can be used with iOS devices such as iPhones.
Supports all 9 OBD2 protocols and multilingual: ISO15765-4 (CAN), ISO14230-4 (KWP2000), ISO9141-2, J1850 VPW, J1850 PWM. It works in English, German, Spanish, French, Italian, Dutch, Portuguese and more, so you can ignore the language barrier.
OBD 2 adapter: suitable for all vehicles with OBD 2 protocol and 16-pin standard plug, which were manufactured in the USA in 1996 and Europe 2000. Whether your vehicle is with petrol, 12 V diesel, new or old, our OBD 2 reader works with it.
Monitor & Analyzer: V1.5 top Bluetooth OBD2 adapter, quickly read engine diagnostic trouble codes, reset check engine light (CEL), check if your vehicle is ready for smog check, turn off MIL, display the sensor values in real time with your phone or tablet. Save money by fixing car problems quickly and accurately yourself.
Intelligent diagnostic functions: Read and clear error codes, instant display of their meaning (over 3000 generic code definitions in the database). Current sensor data (engine speed, calculated load value, coolant temperature, vehicle speed, air flow, fuel trim, fuel system status, intake manifold pressure)

7,99 €
09

suuosl

OBD2 Bluetooth Adapter (V1.5) + 4-Pin for Car Diagnostic Tool OBD Adapter for All OBDII Protocol Vehicles - Upgraded V1.5 OBD2 Diagnostic Cable - Complete Diagnostic Kit for Cars and Motorcycles

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Supports all common OBD-II protocols: The elm 327 scanner covers 9 protocols, including CAN-BUS, J1850 PWM, ISO9141-2. This makes it a real OBD-II diagnostic tool for universal vehicle diagnostics - precise, fast, reliable.
READ & REAL TIME ERROR CODES - The odb2 diagnostic tool reads check engine lights (CEL/MIL), shows real-time data such as RPM, temperature, throttle valve, fuel trim. Errors can be deleted and monitored directly.
OBD2 Bluetooth Adapter for All Vehicles: This OBD2 adapter works with all OBD2 compatible cars from 2000 (EU) and 1996 (US). Whether petrol or diesel, old or new – the ideal reader car for home and professional users.
Extensive diagnostics and code definitions: With over 3000 generic error codes in the database, the OBD2 diagnostic device provides smart analysis for all vehicles and shows instant explanations - ideal for error elimination and cost savings.
Compatible with many apps & systems: works perfectly with Android and Windows devices via Bluetooth. Support popular diagnostic apps such as Torque, OBD Car Doctor, DashCommand, OBD Fusion - Easy connection, fast evaluation.

10,99 €
10

CGEAMDY

CGEAMDY OBD2 Scanner, OBD2 Diagnostic Device, Car OBD2 Scanner Code Reader, Diagnostic Device Scanner, Odb2 Error Code Reader Adapter, Engine Fault Code Reader Car Diagnostic Device OBD Error Codes

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8.1

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

【Support Customization Updates】: This OBD2 car diagnostic tool is designed with the future in mind and offers the crucial ability to support firmware updates. This feature ensures that the tool remains at the forefront of automotive technology and adapts to the ever-evolving landscape of vehicle systems and diagnostics. By keeping the device's software up to date, users can be safe.
【Real-Time Data Monitoring】: Beyond the basic function of reading and clearing fault codes, this advanced OBD2 car diagnostic tool extends its utility by providing robust real-time data monitoring functions. This feature allows the user to continuously track and evaluate a variety of critical vehicle parameters and provides a comprehensive overview of the vehicle's operating status.
【Multiple Models Compatibility】: Designed with inclusivity and versatility in its core, this OBD2 tool is carefully crafted to suit a variety of vehicle models. It offers compatibility with the vast majority of cars and small trucks that comply with OBD2 standards, ensuring wide applicability across the automotive spectrum. This universal design philosophy overcomes the barriers of specific brands and models.
【Easy-to-use interface】: The OBD2 car diagnostic tool has an intuitive interface that simplifies the diagnostic process. With a clear display and user-friendly menu navigation, it allows the user to easily access live data, view still images and monitor the status of different vehicle systems to ensure a seamless experience even for those who are not familiar with car diagnostics.
【Advanced Diagnostic Capabilities】: This OBD2 car diagnostic tool is equipped with the latest technology that allows you to read and clear fault codes from your vehicle's computer system. It provides detailed information about the malfunction indicator (MIL) and provides insights into the cause of problems, so you can quickly and accurately diagnose problems with your car.

22,99 €