TopDiag P200 Circuit Tester Review – Pros & Cons – TopDiag P200

TopDiag P200 Pro Power Circuit Probe Kit 9V-48V Circuit Systems 2025 Automotive Circuit Tester - Multimeter/Oscilloscope/Fuel Injector Tester/Activating Component

$199.00 @ Amazon.com

💪[Powerful and Accurate Probe Tester Kit]: The P200 Pro Automotive Circuit Tester is an upgraded version of the P200, designed for quickly testing all ✅9V-48V✅ electronic systems. It can diagnose problems in car components, electrical circuit systems, or fuel injectors swiftly. It's intelligent and intuitive, perfect for both novice drivers and maintenance engineers.

🔧[Comprehensive Automotive System Tester]: This kit offers multiple functions, covering almost all probe tools available on the market. It includes: ✅Multimeter function✅Current Leakage Record✅Oscilloscope mode✅Continuity testing✅Relay test✅Activating components✅Power supply/ground detecting/open & short testing✅Trailer lights testing✅Signal circuit testing✅Checking for Bad Ground Contacts✅Injector cleaning✅20FT extension cable & LED light✅AC/DC voltage/resistance/diode/frequency testing.

💡 [Current Leakage Detection]: The P200 Pro Tester features a 2.4-inch screen, supports real-time current size detection, and displays the current graph. It allows you to monitor current status for up to an hour and playback to understand any current leakage issues.

🔋 [Smart Test & Polarity Test]: When connected to the Car Electrical Test Tool probe to measure voltage, resistance, or polarity, it automatically becomes an instant auto-range device. It displays corresponding parameter values and prompts on the HD LCD screen. The 20ft cable aids in diagnosing the car's condition quickly without the need to open the wiring.

🧰[Multimeter & Oscilloscope Functions]: The P200 Pro Circuit Tester is a versatile and powerful Power Circuit Probe Kit. It contains multimeter functions for DC voltage (VDC), resistance (OHM), diode/on-off test (DIO), current (AMP), and frequency testing. Combined with the unique oscilloscope function and buzzer, it tests components based on voltage, resistance, frequency duty cycle, and waveform diagrams, quickly diagnosing circuit system problems.

🌐 [18 Languages & Online Firmware Upgrade]: The device supports 18 languages. Use a USB data cable to connect the automotive circuit tester to a computer for online upgrades. Stay updated with the latest vehicle updates.

TopDiag P200 Pro Power Circuit Probe Kit 9V-48V Circuit Systems 2025 Automotive Circuit Tester - Multimeter/Oscilloscope/Fuel Injector Tester/Activating Component

TopDiag P200 Pro Automotive Electric Circuit Tester Power Probe,Supports All Vehicle Electrical Systems(P200 Pro)

$238.00 @ Amazon.com

【High-quality automotive diagnostic tool】: The Jdiag P200 Pro is a high-quality automotive diagnostic tool that is reliable and durable. It provides multifunctional diagnostic functions for your vehicle and delivers accurate diagnostic results.

【Injector Testing And Cleaning 】: Support For Iniector Nozzle Signal Analogue Output, Injector nozzle signal acquisition, iniector nozzle cleaning, analysis of parameters to draw waveform signals.

【 Wide compatibility 】: Jdiag P200 Pro is compatible with a wide variety of vehicle makes and models. It can perform comprehensive diagnostics of many systems, including engine, transmission, airbags, ABS, steering, and more.

【 Simple operation and ease of use 】: The Jdiag P200 Pro has an intuitive operating interface, making it easy to use even for novice users. In addition, its compact and lightweight design is portable and allows easy diagnosis anywhere.

【Highly Accurate Diagnostic Results】: The Jdiag P200 Pro is designed to provide highly accurate diagnostic results. It accurately identifies problems with your vehicle and suggests appropriate repairs and maintenance.

【Reliability and Durability】: The Jdiag P200 Pro is made of durable materials and can withstand long-term use. The reliable diagnostic features and product quality allow customers to use the product with peace of mind.

TopDiag P200 Pro Automotive Electric Circuit Tester Power Probe,Supports All Vehicle Electrical Systems(P200 Pro)

TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode

$129.00 @ Amazon.com

💪【15+ Diagnostic Car Services for Automotive System】Multiple functions - almost covering the probe tools on the market. With ✅Multimeter function, ✅Oscilloscope mode, ✅Continuity testing, ✅Relay test, ✅Activating components in your hand, ✅Power supply/ground detecting/open & short testing, ✅Trailer lights testing, ✅Signal circuit testing, ✅Checking for Bad Ground Contacts, ✅Clean the Injectors, ✅20FT extension cable & LED light,✅ AC/DC voltage/resistance/diode/frequency testing.

💪【Multimeter & Oscilloscope Tester】The P200 Circuit tester will be the more versatile and powerful Power Circuit Probe Kit you've ever seen. Contains the multimeter's DC voltage (VDC), resistance (OHM), diode/on-off test (DIO), current (AMP) and frequency test functions, combined with the unique oscilloscope function and buzzer, can test components according to voltage, resistance value, frequency duty cycle, and waveform diagrams to quickly diagnose problems with your circuit system.

💪【Activating Electrical Components】Being able to ap-ply battery power or ground right to the probe tip gives you the ability to activate and dynamically test electrical components such as lights, motors and solenoids.

💪【Smart Test & Positive & Negative Test】When connected to the probe of Car Electrical Test Tool to measure voltage, resistance, positive/negative polarity, it will automatically become an instant auto-range, intelligent judgment does not require manual selection, and the corresponding parameter values and prompts are displayed on the HD LCD screen. With a 20ft cable, you can quickly assist you in diagnosing the car's condition without opening the wiring.

💪【Clean the fuel injector】It is extremely important to regularly test the fuel injector. P200 provides 4 types of pulse signals (once or multiple times) combined with car cleaner to achieve maximum cleaning effect.

💪【Relay Test】There’s nothing worse getting stuck on the trail at night because your light relay burnt out, losing your radio in the middle of a road trip, or not being able to finish your project because you’re short one small relay. With our P200 relay test, fix your lights on the fly, and keep the road trip rocking all night long.

TopDiag P200 Power Circuit Probe Kit - Automotive Circuit Tester with 2024 Online Update, 9~30V Voltage Range, Multimeter, Relay Test, Fuel Injector Tester, Activating Component, Oscilloscope Mode

P200 Pro Power Circuit Kit Probe with Car Battery Tester Combination

$179.00 @ Amazon.com (Save 22%)

💪【Powerful and More Accurate Probe Tester Kit】The P200 Pro Automotive Circuit Testeris an improved version of the P200, a tool for quickly testing all ✅9V-30V✅ electronic systems. It can diagnose problems in the components, electrical circuit systems or fuel injectors of the car in the shortest time. Not only the test time is greatly shortened, but also more intelligent and intuitive, suitable for any novice driver or maintenance engineer.

【Probe Tester Kit for Automotive System】Multiple functions - almost covering the probe tools on the market. With ✅Multimeter function, ✅Current Leakage Record✅Oscilloscope mode, ✅Continuity testing, ✅Relay test, ✅Activating components in your hand, ✅Power supply/ground detecting/open & short testing, ✅Trailer lights testing, ✅signal circuit testing, ✅Checking for Bad Ground Contacts, ✅Clean the Injectors, ✅20FT extension cable & LED light,✅ AC/DC voltage/resistance/diode/frequency testing.

💪【Current Leakage Detection】P200 Pro Tester has a 2.4-inch screen, supports detection of current size and real-time current, and displays the current graph on the screen. You can watch the current situation for up to 1 hour and play it back to understand the current leakage.

💪【Smart Test & Positive & Negative Test】When connected to the probe of Car Electrical Test Tool to measure voltage, resistance, positive/negative polarity, it will automatically become an instant auto-range, intelligent judgment does not require manual selection, and the corresponding parameter values and prompts are displayed on the HD LCD screen. With a 20ft cable, you can quickly assist you in diagnosing the car's condition without opening the wiring.

💪【Multimeter & Oscilloscope Tester】The P200 Circuit tester will be the more versatile and powerful Power Circuit Probe Kit you've ever seen. Contains the multimeter's DC voltage (VDC), resistance (OHM), diode/on-off test (DIO), current (AMP) and frequency test functions, combined with the unique oscilloscope function and buzzer, can test components according to voltage, resistance value, frequency duty cycle, and waveform diagrams to quickly diagnose problems with your circuit system.

P200 Pro Power Circuit Kit Probe with Car Battery Tester Combination

P200 Pro Power Circuit Probe Kit 9V-48V and T200 Vehicle Code Reader for Cars and Trucks

$199.00 @ Amazon.com

[Multimeter & Oscilloscope Functions]: The P200 Pro Circuit Tester is a versatile and powerful Power Circuit Probe Kit. It contains multimeter functions for DC voltage (VDC), resistance (OHM), diode/on-off test (DIO), current (AMP), and frequency testing. Combined with the unique oscilloscope function and buzzer, it tests components based on voltage, resistance, frequency duty cycle, and waveform diagrams, quickly diagnosing circuit system problems.

Check Engine Code Reader: The Topdiag T200 car scanner diagnostic tool can easily determine the cause of the check engine light coming on, quickly read and clear diagnostic trouble codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself.

[Comprehensive Automotive System Tester]: This kit offers multiple functions, covering almost all probe tools available on the market. It includes: ✅Multimeter function✅Current Leakage Record✅Oscilloscope mode✅Continuity testing✅Relay test✅Activating components✅Power supply/ground detecting/open & short testing✅Trailer lights testing✅Signal circuit testing✅Checking for Bad Ground Contacts✅Injector cleaning✅20FT extension cable & LED light✅AC/DC voltage/resistance/diode/frequency testing.

Accurate Fast and Easy to Use: This T200 OBD2 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble codes in seconds. If you want to find out the cause of the check engine light, this device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.

OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. This is not the case with the T200 car code reader as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Check compatibility with your vehicle model before purchasing.

P200 Pro Power Circuit Probe Kit 9V-48V and T200 Vehicle Code Reader for Cars and Trucks

Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V

$129.00 @ Amazon.com

[P200 Power Circuit Probe Tool] Topdiag P200 probe tester can be used to test voltage, fuel injector, diode, continuity, polarity, etc, which is the only upgradeable power circuit tester on the market. It is a tool for quickly testing all 9V-30V electronic systems. The test time is greatly shortened, convenient, fast and intelligent!

[Multimeter & Oscilloscope Mode] There are two powerful functions of P200 power circuit probe kit - one is the multimeter mode, which can quickly test DC voltage, resistance, continuity, diode, current and frequency; the other function is oscilloscope, which can quickly analyzes and diagnoses the problems of vehicles by display electrical waveforms on the screen.

[Fuel Injector Testing] If the fuel injector is damaged, that will easily lead to engine idling instability, fuel consumption increase, cause engine shock. Also, Topdiag P200 power tester also a relay tester automotive kit, which will make it more convenient for the owner to check whether the fuel injector and other parts of the vehicle in a good condition regularly.

[Component Activation Function] P200 circuit tester can activating components of vehicles, which is used to generate activation signals to the detected components, such as activating lights. There are two activation methods, positive activation and negative activation. The maximum current through activation can reach 20A, There are the three activation modes: MOMENT, LACH and PULSE.

[0~5V Adjustable Power Supply] Togdiag P200 is a power circuit probe test kit for all cars, so it can adjust 0~5V output voltage to check the circuit connection and it is also useful to check the wiring to the ECU/ ECM, which can ensure the safety of the tested vehicles.

[Positive & Negative Test] Use the P200 electric tester's probe to find the positive and negative of the power supply. If it is positive,the screen will display the probe voltage and the buzzer will alarm. If it is negative, the grounding icon is displayed on the screen.

Topdiag P200 Power Circuit Probe Kit - Test Light Automotive Circuit Tester Circuit Breaker Finder Tool, Relay Tester Multimeter, Oscilloscope, Fuel Injector Tester - 9~30V

VDIAGTOOL V200 Pro Automotive Power Circuit Probe Tester Breaker Finder Tool, 12/24V Electrical Open Short Circuit Finder, Wire Tracer, AC/DC Trailer Relay Fuse Test for 99% Cars

$79.97 @ Amazon.com (Save 22%)

【ALL-IN-ONE TOOL FOR ANY CIRCUIT PROBLEM DIAGNOSIS】V200 Pro covers all circuit tests: ✔Circuit Breaker/Open Test ✔Tracing Wire ✔AC/DC Voltage Test ✔Diode Test ✔Resistance Test ✔Polarity Test ✔Continuity Test ✔Ground Test ✔Activate Components ✔Signal Circuit Test ✔Relay, Fuse, Trailer Light Test. You can quickly & easily Locate short circuits, open connections, broken wires, current leaks and even trace wires. Get this essential circuit tester today and save your time and costly trip to a dealership!

【COMPREHENSIVE POWER CIRCUIT TESTER】Switch to Mode I, you’ve just activated Power Circuit Probe Tester which supports 4 working modes:AC/DC Voltage, Resistance and Diode. The electrical probe tester allows users to check 12V 24V electrical system instantly, tells you whether the wire or circuit is live, and which side of the circuit you are on, positive or negative. NOTE: This circuit tester can be powered by either connecting to cigarette lighter/vehicle’s battery,no external battery needed!

【LOCATING BREAKER POINT EFFICIENTLY】Switch the V200 Pro All-In-One Circuit Tester Kit to Mode II, you will be able to use the breaker finder which can easily locate the circuit breaker point, open connections, broken wires, current leaks with tone change, even trace wire/cable without damaging the insulation. This circuit breaker finder tool works on all kinds of vehicle circuit issues such as those found in car, SUV, mini van, truck, tractor, boat & RV, with voltages between 6 and 42 volt DC.

【COMPONENT ACTIVATION & SENSOR/SIGNAL CIRCUIT TEST】VDIAGTOOL V200 Pro power circuit probe kit can generate activation signals to electrical components like car lights, motors, windshield wipers, radiator fans, relay, fuel injector and etc to troubleshoot electrical problems; locate auto short circuits if you keep getting blown fuses and also test various sensors, signal circuits to pinpoint the root cause to electrical issues when you have extracted DTCs from vehicle ECUs.

【OVERLOAD PROTECTION TO PROTECT CAR ELECTRONICS】 This automotive electrical tool comes with short circuit protection. Whenever it gets overloaded, it just gonna shut down and restart, which is a safe measure to protect the device and car electronics. Useful Tip: You can also use overload protection feature to test short circuit conveniently. NOTE: If you received defective unit or it malfunctions, please reach us via ✔vdiagtool2 @ outl ook c om for hassle-fr*ee replacement any time!

【20FT EXTENSION CORD TO WORK ANYWHERE AROUND THE VEHICLE】 V200 Pro power circuit probe tester comes with 20 feet long cord plus 20 feet extension cord. Combining the feature that it can be powered by the cigarette lighter, and alligator clip for convenient ground connection, you can test electrical circuit system anywhere around the vehicle. No more worrying about short cord while testing electrical system! ✔NOTE: Mode II-circuit breaker tester is powered by 1pcs 9V Battery!

VDIAGTOOL V200 Pro Automotive Power Circuit Probe Tester Breaker Finder Tool, 12/24V Electrical Open Short Circuit Finder, Wire Tracer, AC/DC Trailer Relay Fuse Test for 99% Cars

VDIAGTOOL V500 Pro Automotive Circuit Tester, Power Circuit Probe Tester Breaker Finder Tool, 9/30V Electrical Open Short Circuit Finder, Multimeter/Oscilloscope/Relay/Injector Test

$159.99 @ Amazon.com (Save 20%)

【All In One Tool For Any Circuit】V500 Pro covers all circuit tests: ✔Circuit Breaker/Open Test✔AC/DC Voltage Tester✔Resistance Test✔Positive / Negative Test✔Resistance✔Fuel Injector/Fuse Relay Test✔Component Activation✔Tracing Wire✔Polarity Test✔Continuity Test✔Grounding Test✔Trailer Light Test✔Oscilloscope Mode✔Test light✔Digital circuit tester.This electrical tester is dedicated to solving real problems and saving you time and money

【Locating Open Circuit】Switch the V500 Pro automotive circuit tester Kit to mode II, you will be able to use the breaker finder which can easily locate the circuit breaker point, open connections, broken wires, current leaks with tone change, and even trace wire/cable without damaging the insulation. This circuit breaker finder tool works on all kinds of vehicle circuit issues such as those found in cars, SUVs, minivans, trucks, tractors, boats & RVs

【Oscilloscope & Multimeter】The V500 PRO super probe tester has two powerful testing modes: oscilloscope and multimeter. The Multi-function tester various voltage signals with four features: Voltage (VDC), Resistance(OHM), Diode (DIO), Current (AMP), Frequency (HZ), and Polarity. The Oscilloscope module is an electronic test instrument that displays electrical signals graphically, This function can show the fluctuation of data more intuitively

【Injector Test】V500 PRO automotive circuit tester This feature uses a probe tip to output different pulse signals to the injector and check the injector spraying status. This feature can help diagnose injector conditions. You can save the cost of going to the garage to diagnose injector problems

【0-5V Power Supply】Supply provides a stable, adjustable, low-voltage power supply for customers' circuit diagnosis. It can simulate input voltage, debug sensors, test circuit behavior, and calibrate systems. Customers can use it to locate circuit faults quickly, avoid component damage caused by misoperation, and simplify the process of circuit debugging and optimization. It is especially suitable for debugging and diagnosing low-power electronic devices and sensor systems

【COMPONENT ACTIVATION & SIGNAL CIRCUIT TEST】Provides power to various car parts like bulbs, radiator fans, starter motors, relays, window regulators, and windshield wipers, enabling effective testing and troubleshooting. Locate auto short circuits if you keep getting blown fuses and also test various sensors, and signal circuits to pinpoint the root cause of electrical issues when you have extracted DTCs from vehicle ECUs

VDIAGTOOL V500 Pro Automotive Circuit Tester, Power Circuit Probe Tester Breaker Finder Tool, 9/30V Electrical Open Short Circuit Finder, Multimeter/Oscilloscope/Relay/Injector Test

P200 Power Circuit Probe Kit, 9-30V Automotive Circuit Tester, Circuit Breaker Finder, Multimeter/Activating Component/Relay Test/Fuel Injector Tester/Oscilloscope/0~5V Power

$129.00 @ Amazon.com

【Upgraded Circuit Test Kit】: P200 Automotive Circuit Tester features: 1.Intelligent identification of voltage/resistance 2.Multimeter mode 3.Relay test 4.Injector test 5.Diode test 6.Oscilloscope function 7.0-5V adjustable power supply 8.Activation of vehicle components 9.Positive and negative polarity test 10.Intelligent circuit breaker protection 11.Screen style background optional 12.Network can be upgraded online 13.Built-in Multi-lingual settings.

【Smart Test】: Power Circuit Probe Kit can automatically identify the signal under test, Automotive circuit tester Accurately and quickly detect voltage and resistance, and save time for switching between different test modes. Equipped with about 20ft extension cord for you to reach all around your vehicles, trucks and trailers. Also, the built-in flashlight of P200 power circuit probe can illuminate your working area.

【Circuit Probe Smart Test】: You can quickly help you diagnose the condition of the car without having to open the P200 automotive circuit tester wiring when connected to the probe of the Car Electrical Test Tool to measure voltage, resistance, and positive/negative polarity. If positive, the screen will display the probe voltage and sound a buzzer alarm. If negative, the screen will display the ground icon.

【Component Activation】: Topdiag P200 probe tester has 3 activation modes and overload current settings can supply power to components such as lamps, cooling fans, starters, relays, and washers. The 0~5V power supply function is very effective when checking the wiring with ECU. Powered by the car battery.

【Multimeter & Oscilloscope Tester】: P200 Circuit Tester More Powerful and Adaptable Power Circuit Probe Kit, It is a tool for quickly testing all 9V-30V electronic systems. With its special oscilloscope function and buzzer, it combines the multimeter's DC voltage (VDC), resistance (OHM), diode/on-off test (DIO), current (AMP), and frequency test functions. You can test components based on voltage, resistance value, frequency duty cycle, and waveform diagrams to quickly analyzes and diagnoses the problems of vehicles.

【Fuel Injector Testing】:Topdiag P200 test probecan diagnose issues with the car's parts, electrical circuits, or fuel injectors. In addition to being significantly shorter, the test is also smarter and easier to use, making it appropriate for even the most inexperienced driver or maintenance engineer.

P200 Power Circuit Probe Kit, 9-30V Automotive Circuit Tester, Circuit Breaker Finder, Multimeter/Activating Component/Relay Test/Fuel Injector Tester/Oscilloscope/0~5V Power

VDIAGTOOL V200 PRO Upgrade Kit Automotive Power Circuit Probe Tester with 30PCS Back Probe Kit, 12/24V Electrical Short and Open Circuit Finder AC/DC Voltage Test Activating Component 40Ft Cable

$159.49 @ Amazon.com

【ONE TOOL FOR ANY AUTO ELECTRICAL ISSUES】V200 Pro upgrade kit covers automotive power circuit probe tester covers all circuit tests: ✔Circuit Open Test ✔Tracing Wire ✔AC/DC Voltage Test ✔Diode Test ✔Resistance Test ✔Polarity Test ✔Continuity Test ✔Ground Test ✔Activate Components ✔Signal Circuit Test ✔Relay, Fuse, Trailer Light Test. You can quickly & easily locate short circuits, broken wires, and even trace wires. Additional 30pcs back probe set make it easier and faster to use and do testing.

【MUST-HAVE ADDITION TO TOOLBOX】V200 PRO Upgrade kit comes with a V200 Pro automotive circuit tester and 30 PCS Back Probe kit for harness connectors, automotive sensors and fuel injectors, including back probe pins*15, Banana Plug to alligator clip circuit test wires*5, wire piercing probes*5 & nickel-plated copper alligator clips*5. This convenient & efficient circuit instrument is made to assist serious DIY auto enthusiasts, electronics engineers, and technicians with many electrical problems.

【ONE-STEP SOLUTION FOR AUTO ELECTRICAL TESTS】This all-in-one power circuit probe tester kit meets the needs of 3 products at one time. Simply switch from the power circuit probe tester functional mode to the circuit breaker finder tool mode with one click. The 30pcs probe lead set will be a great assistance for auto diagnostics, testing, and repair, popularly used in service shops, schools, homes, and industries. It will also be a ideal choice as a Fathers’ Day Parcel.

【COMPREHENSIVE POWER CIRCUIT TESTER】As for the circuit probe tester, switch to Mode I, you’ve just activated Probe Tester which supports 4 working modes: AC/DC Voltage, Resistance & Diode. The electrical tool allows users to check 12/24V electrical system instantly, tells you whether the wire or circuit is live, and which side of the circuit you are on, positive or negative. NOTE:This tester can be powered by either connecting to cigarette lighter/vehicle’s battery, no external battery needed!

【LOCATING BREAKER POINT EFFICIENTLY】Switch the Circuit Tester to Mode II, you will be able to use the breaker finder which can easily locate the circuit breaker point, open connections, broken wires, current leaks with tone change, even trace wire/cable without damaging the insulation. This circuit breaker finder tool works on all kinds of vehicle circuit issues such as those found in car, SUV, mini van, truck, tractor, boat & RV, with voltages between 6 and 42 volt DC.

【COMPONENT ACTIVATION & SENSOR/SIGNAL CIRCUIT TEST】VDIAGTOOL V200 Pro upgrade kit power circuit probe tester can generate activation signals to electrical components like car lights, motors, windshield wipers, radiator fans, relay, fuel injector and etc to troubleshoot electrical problems; locate auto short circuits if you keep getting blown fuses and also test various sensors, signal circuits to pinpoint the root cause to electrical issues when you have extracted DTCs from vehicle ECUs.

VDIAGTOOL V200 PRO Upgrade Kit Automotive Power Circuit Probe Tester with 30PCS Back Probe Kit, 12/24V Electrical Short and Open Circuit Finder AC/DC Voltage Test Activating Component 40Ft Cable