[Tested] 5 Best OBD2 Scanners with Relearn 2024

Brandon Lutz

No matter your budget or relearn needs, we’re confident you’ll find the perfect option after reading this article.

Here’s why you can trust us:

We’ve spent much time testing the top 9 scanners with relearn functions, ranging from $150 to $800. The 5 best relearn scanners in this review result from 14 days of thorough testing and careful selection.

With these 5 reliable options for relearn tasks, you’re sure to find a scanner that meets your needs. So, why wait? Let’s dive into exploring these 5 products together!

Additional information regarding testing durations and the quantity of test samples can be found in the table below:

TesterOBD Advisor’s Testers
Testing dateNov 01 – Nov 14, 2023
Number of tested products9
Number of tested cars10

Best OBD2 Scanners with Relearn: Comparison Chart

[Mobile users: Swipe left for full table]
Overall score
Throttle Relearn
Crankshaft Relearn
Transmission relearn
Check Price
[Editor Pick]






Launch CRP123X


LAUNCH X431 for GM



Best OBD2 Scanners with Relearn Reviews

#1. LAUNCH X431 V Pro



Price: Under $1,000

Relearn functions supported: Crank relearn, throttle relearn, TPMS relearn

Launch X431 V Pro is our top pick, scoring a perfect 10 for relearn performance.

We tested Launch X431 V Pro on 10 different cars to ensure it fully supports the 3 most common relearn functions: crankshaft, gear relearn, and throttle relearn. As you can see, it earned a perfect 10, meaning it performed excellently on our test cars.

We really appreciate the clear step-by-step instructions it provides for performing relearn functions. This feature is especially helpful for those who may not be very familiar with relearn procedures.

Besides its impressive relearn capabilities, Launch X431 V Pro offers a range of other advanced functions. One standout feature is its bidirectional control, which worked flawlessly on every car we tried it on. Its ability to cover such a wide range of vehicles provides a strong sense of confidence for users, especially professionals.

However, there’s a minor drawback: it doesn’t auto-detect the car’s VIN number every time. Occasionally, you may need to enter the VIN manually, which can be a bit time-consuming. However, this is a relatively rare occurrence and not a major issue.

All in all, Launch X431 V Pro stands out as the most reliable scan tool for relearning components.

Today’s best LAUNCH X431 V Pro price:

#2. XTOOL A30M

XTOOL Anyscan A30M


Price: Under $300

Relearn functions supported: Crank relearn, throttle relearn, TPMS relearn

While the XTOOL A30M may not be the most powerful scanner for relearning, it’s the most budget-friendly option at around $200 to handle crankshaft relearn tasks.

You’ll find all the relearn functions, including throttle, crankshaft, transmission, and BPP sensor relearn, neatly gathered in the “Special Functions” menu. It’s easy to locate.

List of relearn and reset functions on XTOOL A30M.

What’s impressive is the processing speed of the XTOOL A30M. Relearn functions connect and complete their tasks in about 7 seconds. And for a full system scan, it usually takes only 45 to 50 seconds to scan 22 systems.

In our previous test back in April 2023, the waiting time for a full-system scan was 4 minutes. However, with this test, we noticed a significant improvement in processing speed. It seems like XTOOL has made some updates to enhance the speed.

The only hiccup we noticed is that sometimes it lags during autoVin scans. But don’t worry, if that happens, just exit the app and try again – it usually works smoothly after that.

Since August 2023, it has added the key programming feature. And combined with its lifetime free updates, XTOOL A30M stands out as the go-to scanner in the $200 price range for all supported relearn functions.

Today’s best XTOOL A30M price:

#3. XTOOL D7: Best for transmission relearn



Price: Under $500

“Versatile and affordable” perfectly sums up the XTOOL D7.

When we put this scanner to the test, we were genuinely impressed with how quickly it responded to tasks like crankshaft relearn, transmission relearn, and throttle relearn. At first, we were concerned that its affordability and extensive features might slow it down, but the XTOOL D7 proved us wrong – it’s truly a versatile performer.

In addition to its relearn functions, the XTOOL D7 also offers full-system scan, active tests, and key programming, all of which left a great impression on us. The full system scan took us about 1.5 minutes to scan 40 systems, which we think is quite reasonable.

While the XTOOL D7 doesn’t have Bluetooth, its wired connection ensures a stable connection, resulting in speedy diagnoses. The 7” screen may be a bit small when viewing live data graphs, but it’s bright and easy to read. The scanner’s menu is user-friendly, so we had no trouble finding and using the needed functions.

Out of all the scanners we tried, the XTOOL D7 really stood out as the most budget-friendly choice for professionals. Plus, it comes with a generous 3-year update package. For professionals looking for a cost-effective option, this is definitely the top choice.

Today’s best XTOOL D7 price:

#4. LAUNCH X431 for GM

LAUNCH X431 for GM


Price: Under $200

Relearn functions supported: Crank relearn, throttle relearn, TPMS relearn (GM cars only).

If you own a Chevy, Buick, Cadillac, GMC, or any other GM brand, Launch X431 has got you covered for all your relearn needs.

The most crucial relearn task for GM vehicles is the crankshaft relearn. This scanner’s ability to relearn the crankshaft sensor is quite reliable, covering 90% of the cars we tested.

However, the interface isn’t user-friendly. Finding relearn functions might require a few extra steps. Initially, it can be a bit challenging, and you’ll need to explore the menus by clicking around. The good news is that it comes with a touchscreen, which makes scrolling up and down to find the functions you need much quicker.

In terms of performance, we’d rate it 9 out of 10, but for ease of use, it gets a 7.5 out of 10.

Besides relearn functions, this scanner offers a wide range of features, much like the Launch X431 V Pro. Whether it’s active tests, key programming, or various service functions, LAUNCH X431 for GM has you covered. Just keep in mind that these functions are tailored for GM cars.

In fact, we’re confident LAUNCH X431 for GM can handle the toughest tasks that an $800 Launch X431 V Pro can, but at only a quarter of the price!

So, if you’re looking for a GM scanner with relearn function, Launch X431 for GM is the best choice. It’s a budget-friendly investment, especially for home mechanics.

Today’s best LAUNCH X431 for GM price:

#5. LAUNCH CRP123X Elite



Price: Under $200

After installing a new throttle position sensor or cleaning the throttle body, the computer sometimes doesn’t relearn on its own. But with the Launch CRP123X, the problem is solved!

The touchscreen feature on the Launch CRP123X makes the throttle relearn process a breeze. In fact, it only took us 33 seconds to complete the task.

 We also used the Launch CRP123X to scan the four main systems: ABS, SRS, Transmission, and Engine. This scanner gives us the option to scan these systems independently or all at once. It’s very convenient.

One of our favorite features is the live data graphing. Thanks to the horizontal screen, viewing live data is a piece of cake. We even tried selecting and viewing up to four PIDs at once, and the data refreshed smoothly without any noticeable delay.

Though, we must admit, the instruction manual could be a bit clearer. It might take some time and effort to figure out how to use the scanner effectively if you rely solely on the manual.

Having the throttle reset function in a scanner like the Launch CRP123X can save a significant amount of money. Just think about not having to pay $120 per hour for a throttle body reset at the mechanic’s, and even potentially avoiding future issues altogether.

This scanner is truly a cost-effective investment for any home mechanic. We think you’ll find it incredibly useful!

Today’s best Launch CRP123X price:

Final Thought

As we wrap up this review, we’re excited to share our top two favorite scanners with relearn capabilities:

  • Launch X431 V Pro: It’s our top pick because it’s highly reliable for all relearn needs. With its broad vehicle coverage, it’s an excellent choice, especially for professionals.
  • XTOOL A30M: If you’re looking for affordability, this is our budget-friendly choice. It covers most relearn functions, although the support can vary depending on the car model. It’s a great option for those looking for a cost-effective scanner.

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