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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

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Availability: Only 10 left in stock, order soon!
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Arrives Monday, Mar 2
Order within 8 hours and 29 minutes
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Style: P200


Features

  • 15+ Diagnostic Car Services for Automotive SystemMultiple 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 TesterThe 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 ComponentsBeing 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 TestWhen 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 injectorIt 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 TestTheres 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 youre short one small relay. With our P200 relay test, fix your lights on the fly, and keep the road trip rocking all night long.
  • Widely ApplicationThe Topdiag P200 is essential for a range of automotive diagnostic scenarios, whether you're a professional mechanic troubleshooting complex vehicle issues or a DIY enthusiast performing routine maintenance tasks. With its versatile capabilities, it's perfect for diagnosing electrical problems, testing relays, analyzing fuel injectors, activating components, and even utilizing oscilloscope mode for advanced troubleshooting. It's a must-have tool for anyone working on automotive electrical systems
  • 18 Languages & Firmware UpgradeYou can choose from 18 languages.You can easily use a USB data cable to connect Circuit tester automotive to a computer to perform an online upgrade program.
  • 1-YEAR WARRANTY, PERFECT SERVICE Topdiag Car circuit tester provides 1-year warranty, and supports 30 days no reason to return. If you encounter any issues during the product update, please contact me immediately. We offer 24/7 online technical support to assist you. E MAIL: jihaotech @ outlook . com

Brand: TopDiag


Power Source: Ac,dc


Style: P200


Color: Multicolored


Item Weight: 1200 Grams


Brand: ‎TopDiag


Power Source: ‎Ac,dc


Style: ‎P200


Color: ‎Multicolored


Item Weight: ‎1200 Grams


Item dimensions L x W x H: ‎15.16 x 11.5 x 4.21 inches


Min. Operating Voltage: ‎9 Volts


Upper Temperature Rating: ‎60 Degrees Celsius


Measurement Type: ‎Multimeter


Maximum Operating Voltage: ‎30 Volts


UPC: ‎791734860403


Manufacturer: ‎TopDiag


Product Dimensions: ‎15.16 x 11.5 x 4.21 inches


Item Weight: ‎2.65 pounds


Item model number: ‎P200


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎March 25, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Mar 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Fast Diagnostic Tool
Style: P60
First Impression - Easy to use. The bright color is easy to find in my toolbox. This tool streamlines electrical troubleshooting on the fleet I maintain. This works on tractors, trucks, trailers and agricultural implements. Any 12-24v DC system I take it to. On mine the tip will heat up until it glows when you power something, so be careful how long you hold the power button. I use it momentarily with no problems. The beeps and buzzers are impossible to ignore because they are bright and loud. That makes this tool safer IMO. There is no internal battery, which makes it even safer, and simple to maintain. The wires are long enough to reach the tail lights on almost anything. I really like it. It's intuitive, fast, brightly colored, and makes me look like I know what I'm doing even when I really don't. ... show more
Reviewed in the United States on October 3, 2025 by edward

  • Works great and very cheap
Style: P60
Works great as a power probe! Wire length is very long. Easy to use hook up ground and test or send 12 volts to what you’re needing to test.
Reviewed in the United States on January 5, 2026 by Brian King

  • Definitely faster and improves your diagnostic capabilities
Style: P60
Good quality works well highly recommend I use it for diagnosing issues in electrical problems on my vehicle vehicles
Reviewed in the United States on December 26, 2025 by bigpoppa41matt

  • Great for the price.
Style: P100
Had issues. Seller made it right. Power probe is great. Checks ohms and send power and ground. Leads are long and work great. No problems with product after seller helped me.
Reviewed in the United States on November 7, 2025 by Wrong size fuses. I ordered mini long leg fuses and got normal maxi size fuses.

  • Power probe
Style: P60
Should of bought one sooner. Best tool to have for diagnosing electrical issues. Easy to use. The wire length is a little short for the grounding probe but it has not been an issue so far
Reviewed in the United States on January 7, 2026 by CelestialGT

  • Absolute must-have tool for DIY mechanics and troubleshooting
Style: P60
This 12-volt power probe is a must-have for any do-it-yourself mechanic. I’m still discovering everything it can do, but it has already become one of the most useful tools I own. It’s been especially handy at the junkyard—hook it straight to a battery and you can power electric seats, windows, and locks without tearing anything apart. Being able to test circuits directly makes diagnosing electrical issues much faster. I’ve used it to find shorts, identify broken wires, and quickly power components like locks, radios, and windows to confirm they work. It saves a ton of time compared to traditional test lights or chasing wiring blindly. The tool feels solid, works exactly as advertised, and is incredibly convenient for both troubleshooting and testing. For the price, you really can’t beat it. This is one of those tools you don’t realize you need until you have it—and then you won’t want to work without it. Highly recommended. ... show more
Reviewed in the United States on January 5, 2026 by Evan Lombardi

  • Gets the job don. But, wire is not long enough.
Style: P60
Affordable test light. Be aware that the wire is not long enough to test any electronics inside vehicles if you are connected to the under the hood battery. You will definitely need an adapter for any serious diagnostics.
Reviewed in the United States on December 21, 2025 by The Beatle

  • Fast shipping
Style: P60
Very cool Item
Reviewed in the United States on January 8, 2026 by Amador Molina

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