The 7 best-selling fault code on AliExpress
We picked 7 fault code from AliExpress with real orders and good reviews. Prices go from $9.91 to $39.27, the average rating is 4.8 stars and the most popular one has 8.7k orders. Every product opens on AliExpress, where you pay with buyer protection.
Updated: 2026-11
- 1
-55%Car Diagnostic Tool CY3001 OBD2 Scanner Code Reader Car Voltage Tester Engine Fault Code S$10.32 $22.98★ 4.9 · 8.7k soldView on AliExpress → - 2
-61%V510 Professional Obdii Diagnostic Scanner, Engine Fault Code Reader, Live Data Stream, I$9.91 $25.22★ 4.9 · 6.3k soldView on AliExpress → - 3
KONNWEI KW330 Car OBD2 Fault Scanner Engine Battery Test Fault Code Clear Real-Time D$32.70★ 4.7 · 3.8k soldView on AliExpress → - 4
-49%Car OBD2 Scanner Diagnostic Tool Code Reader, Car Voltage Tester Engine Fault Code Scanner$13.89 $27.01★ 4.5 · 343 soldView on AliExpress → - 5
-47%VDIAGTOOL VD30PRO OBD2 Scanner Car Engine Fault Code Reader OBDII Diagnostic Check Engine$30.49 $57.54★ 4.6 · 78 soldView on AliExpress → - 6
-52%Obd2 Scanner Code Reader Car Diagnostic Tool Engine Fault Code Reader, Used to Clear Cel,$11.32 $23.60★ 4.9 · 49 soldView on AliExpress → - 7
-8%KONNWEI KW330 Professional Car OBD2 Diagnostic Tool Engine Battery Testing Fault Code Eras$39.27 $42.59★ 5.0 · 41 soldView on AliExpress →
Quick picks
How much to pay
- Budget up to $11.32 3
- Mid-range $11.32 – $30.49 2
- Premium over $30.49 2
Tip: read the latest buyer photos on AliExpress and check the size or model before you order. Products with many orders and a rating of 4.7 or more are usually the safest choice.
Questions
What is the best-selling fault code?
The most popular one is "Car Diagnostic Tool CY3001 OBD2 Scanner Code Reader Car Voltage Tester Engine Fault Code S", with 8.7k orders.
How much does a fault code cost?
In this list prices go from $9.91 to $39.27; half of them cost less than $13.89.
Which fault code has the best reviews?
"Car Diagnostic Tool CY3001 OBD2 Scanner Code Reader Car Voltage Tester Engine Fault Code S" has an average of 4.9 stars with many orders.
Are there discounts?
Yes. On average these products are 39% below their original price on AliExpress. Prices change often.
People also look for
Prices and ratings come from AliExpress and can change. We may earn a commission when you buy through our links, at no extra cost to you.