• Universal OBD2 code reader scanner
  • Universal OBD2 Code Reader Scanner
  • Universal OBD2 Code Reader Scanner
  • Universal OBD2 Code Reader Scanner
  • Universal OBD2 Code Reader Scanner
  • Universal OBD2 Code Reader Scanner on a garage workbench

Universal OBD2 Code Reader Scanner

$29.95
$29.95 $39.95
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  • Guaranteed Fitment
  • Performance Tested
  • Lifetime Warranty

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Up to 25% off

Know Why Your Check Engine Light Is On, in Seconds

Stop paying for a diagnosis before you even know what's wrong. Plug this OBD2 code reader in under your dash and see the exact trouble code your car's computer is reporting, right on the built-in LCD screen. No batteries, no extra cables, no appointment, no rental counter.

Check engine light on? Read the code, look it up, and decide for yourself whether it's a quick fix you can handle or something worth taking to a shop. Either way, you walk in informed.

Why Drivers Love It

  • Plug in and go: Connects to the standard 16-pin OBD-II port under the dash on 1996+ vehicles. It draws power from your car, so there are no batteries or adapters to buy.
  • Read and clear codes: Pull trouble codes, then reset them once the repair is done and turn that light off.
  • Answers on screen: The easy-to-read LCD shows the code with its definition, and the multilingual menu is simple to navigate.
  • Generic and manufacturer-specific codes: Get the full picture, not just the basics.
  • Freeze frame data: See what your engine was doing the moment the fault was triggered.
  • VIN retrieval: Reads your Vehicle Identification Number on 2002+ vehicles that support Mode 9.
  • Built for modern cars: Supports CAN and all other current OBD-II protocols.

Your Glovebox Upgrade

OBD-II has been mandatory on every car sold in the U.S. since 1996, domestic and import alike. This compact, portable reader gives DIYers and auto enthusiasts an affordable way to check Diagnostic Trouble Codes whenever trouble shows up. Plug it in, read the code, search it on Google or an OBD code database, and start solving the problem. It works on the vast majority of post-1996 vehicles, regardless of make or model.

Compatibility

  • Works with OBD-II compliant U.S., European and Asian vehicles (about 95% of vehicles in the USA).
  • Made for vehicles using standard OBD-II protocols; for non-U.S. European-spec models (such as certain Porsche, VW, Audi, and Subaru vehicles), please verify standard OBD-II compliance on your vehicle before ordering.

Don't let a glowing dashboard light ruin your week. Add it to your cart and be ready the next time it comes on.

Fitment

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Installation & Tools

The Wrench Time

  • Estimated Time: 5-10 Minutes (Setup and Scan)
  • Difficulty: 1/10 - [Plug-and-Play, no heavy wrenching required.]

Tools You Will Need

  • LED Flashlight or Headlamp (The OBD2 port is often hidden in the footwell shadows)
  • Flathead Screwdriver (Some vehicles have a plastic cover over the DLC port)
  • Fuse Puller (In case the port has no power—common on older vehicles)
  • Dielectric Grease (Optional: For ensuring a solid connection on older, corroded pins)
Mechanic’s Pro Tip (The "Gotcha"):
DO NOT DISCONNECT THE BATTERY. Unlike most installs, disconnecting the battery here will wipe the volatile memory in your ECU. This erases the Diagnostic Trouble Codes (DTCs) and "Freeze Frame" data you are trying to read, defeating the purpose of the tool. Also, if your scanner fails to power up, check your Cigarette Lighter/Aux Power fuse. On many platforms, the OBDII port shares this circuit.

Phase 1: Port Location & Pre-Scan Prep

  1. Locate the DLC (Data Link Connector): On most vehicles (1996+), the 16-pin trapezoidal port is located under the driver’s side dashboard, within 2 feet of the steering wheel. Use your flashlight to spot it.
  2. Check for Obstructions: Some manufacturers (especially European models) hide the port behind a plastic trim door or a dummy cap. If present, gently pry this open with your fingers or a small flathead screwdriver.
  3. Inspect the Pins: Before plugging anything in, look closely at the vehicle’s port. Ensure no pins are bent, pushed back, or corroded. A bent pin here can cause communication errors or even short the new scanner.
  4. Key Position: Ensure the ignition is in the OFF position before you plug the device in to prevent voltage spikes.

Phase 2: Connecting the Universal OBD2 Code Reader Scanner

  1. Plug in the Scanner: Align the connector carefully. It is keyed to fit only one way. Push it firmly into the DLC until you feel it seat. Do not force it; if it meets resistance, you are likely misaligned and risk bending pins.
  2. Power Up: Turn your ignition key to the ON position (Position II). This is the position right before the engine cranks (dash lights on, engine off). This powers the ECU.
  3. Establish Communication: The scanner should light up immediately. Follow the on-screen prompts to "Link" or "Connect." If it asks for vehicle details, input the Make/Model correctly to ensure protocol compatibility (ISO, CAN, PWM, etc.).
  4. Read the Codes: Navigate to the "Read Codes" menu. Note down any P-codes (e.g., P0171, P0300). Do not clear them immediately; research the codes on enthusiast forums first to understand the root cause.

Disclaimer: This is a general guide provided for universal applications. Always refer to your factory service manual for exact fuse locations and safety procedures.

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]
Universal OBD2 Code Reader Scanner

$29.95
  • 5 stars: 11 (85%)
  • 4 stars: 2 (15%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
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Anonymous

This scanner is simple to use an works great. Could not be leave how quick i got it!

C
Claude Bedard
ODBII code reader

I used the reader to clear codes ahead of an annual state inspection. It has paid for itself already.

S
Stephan Lynn
Diagnostic reader

Works excellent for what I need

M
Manny
Review of the Universal 0BD2 Code Reader Scanner

Received the Code reader scanner before estimated date. Have not used yet, but have no reason to think it will not perform as it should. If I have a problem later, will try to submit another review.

S
Santiago
Obd2

Nice Lil reader works great easy to use priced just right highly recommend thanks guys

S
Santiago
Obd2

Nice Lil reader works great easy to use priced just right highly recommend thanks guys

J
Jenny P
Subaru Impreza

My check engine light was on, my husband bought it and figured out the code and fixed the car without taking it to a mechanic, we figured it saved us a couple of hundred bucks at least. Thanks Guys!!!

R
Richard Candelaria
Mercury Mountaineer

Was having issues with the Mountaineer stalling thought it was bad gas, had been sitting for awhile, but got the reader and found out I needed to replace the idle air control valve. Great product! Thanks

J
John D
Lexus GS

EXTREMELY EASY TO USE! HAD A STUTTERING ISSUE BUT HOOKED THIS UP, CROSS-REFERENCED THE CODE IT POPPED UP AND FOUND I HAD A MISFIRE IN CYL 5!!

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Jim D
Nissan Pathfinder

car was dying randomly on the freeway and would barely stay running while puffing black smoke out of the exhaust. DID NOT want to pay someone $90/hr just to check it out. this was able to tell me i had a bad MAFS. Its portable and can be handy at any time. well worth a fraction of shops' costs to just diagnose.

M
Mojjgan Saberi
Ford Escort

Great little reader. Plugged it in and automatically scanned and determined correct comm protocol used and then displayed relevant codes. Good item for anyone who wants to have a little more control over what's going on with their car.

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Walt white
Honda CRV

The unit arrived quickly.It was easy to use and worked as promised.I would recommend it as a good buy.It seems to work on most model vehicles.

A
Andy Touglang
Chrysler 300M

Received fast, easy to use, googled the codes. I was told it was 80-100$ by a mechanic for them to scan and figure out codes, waste of money since I did the research and figured out I could do it myself. -Andy Touglang