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Best Diagnostic Tool To Check Engine Light Apps

250+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated October 2026

From beginner-friendly picks to power-user tools, our diagnostic tool to check engine light list covers 250+ iPhone apps updated through October 2026. Compare ratings, prices, and screenshots in one place.

Compare top Diagnostic Tool To Check Engine Light Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1FIXD OBD2 ScannerFIXD OBD2 ScannerFree4.6★ (26K)NoYesNov 2026
2Car Scanner ELM OBD2Car Scanner ELM OBD2Free4.8★ (33K)YesYesNov 2026
3Car Scanner ELM OBD2 - TorqueCar Scanner ELM OBD2 - TorqueFree4.4★ (18)YesYesOct 2026
4OBD2 Scanner | OBD Auto DoctorOBD2 Scanner | OBD Auto DoctorFree4.4★ (6.2K)NoYesNov 2026
5EOBD Facile - OBD2 Car ScannerEOBD Facile - OBD2 Car ScannerFree4.6★ (5.2K)NoYesNov 2026
6RepairSolutions2RepairSolutions2Free4.8★ (40K)NoYesNov 2026
7BlueDriver OBD2 Scan ToolBlueDriver OBD2 Scan ToolFree4.6★ (14K)NoNoNov 2026
8ThinkDiag+ThinkDiag+Free4.5★ (4.4K)NoNoNov 2026

Top Picks for Diagnostic Tool To Check Engine Light

FIXD OBD2 Scanner#1

FIXD OBD2 Scanner by FIXD Automotive Inc

Clear Your Check Engine Light
Editor's Choice
🔧 Utilities
4.6😐(26K ratings)
FreeIn-App Purchases
#46in Utilities
FIXD OBD2 Scanner screenshot 1
FIXD OBD2 Scanner screenshot 2
FIXD OBD2 Scanner screenshot 3
FIXD OBD2 Scanner screenshot 4
FIXD OBD2 Scanner screenshot 5
FIXD OBD2 Scanner screenshot 6

This app translates your car's check engine light into understandable terms, offering insights into problem severity and maintenance needs. It provides advanced features like issue forecasting and mechanic support with an optional premium subscription.

What We Love

  • 👍 Easy to use
  • 🚀 Quickly identifies problems
  • 💰 Saves money on mechanics
  • 🔍 Provides detailed diagnostic information
  • ⚙️ Helpful for DIY maintenance
  • 🧠 Useful AI mechanic feature

Room to Improve

  • 🔒 Requires subscription for full functionality
  • 💰 Expensive premium subscription
  • 🤖 Inconsistent performance across vehicles
  • 🔌 Connectivity issues with device
  • 🤷‍♀️ Limited functionality without subscription
  • 🕰️ Slow app performance after updates
Car Scanner ELM OBD2#2

Car Scanner ELM OBD2 by Stanislav Svistunov

The best OBD2 diagnostic tool!
Strong Contender
🔧 Utilities
4.8😊(33K ratings)
FreeAdsIn-App Purchases
Car Scanner ELM OBD2 screenshot 1
Car Scanner ELM OBD2 screenshot 2
Car Scanner ELM OBD2 screenshot 3
Car Scanner ELM OBD2 screenshot 4
Car Scanner ELM OBD2 screenshot 5
Car Scanner ELM OBD2 screenshot 6

Monitor your car's performance, diagnose engine issues, and view sensor data in real-time. Customize your dashboard with gauges and charts, and reset fault codes. Supports a wide range of vehicles and offers advanced features for specific car brands.

What We Love

  • 🚀 Works great with cheap OBD2 adapters
  • 👍 Highly customizable dashboard
  • 👍 Comprehensive sensor data
  • 👍 Helpful error code lookup
  • 👍 Frequent updates
  • 👍 Affordable pro version
  • 👍 Supports many vehicle makes/models

Room to Improve

  • 🐛 Occasional connection issues
  • 🐛 Incorrect sensor readings for some vehicles
  • 🐛 Crashes or freezes on some devices
  • 🔋 Drains battery when left running
Car Scanner ELM OBD2 - Torque#3

Car Scanner ELM OBD2 - Torque by SINAN ATAKUL

Fixd & Check Engine Diagnostic
Worth Considering
🔧 Utilities
4.4(18 ratings)
FreeAdsIn-App Purchases
Car Scanner ELM OBD2 - Torque screenshot 1
Car Scanner ELM OBD2 - Torque screenshot 2
Car Scanner ELM OBD2 - Torque screenshot 3
Car Scanner ELM OBD2 - Torque screenshot 4
Car Scanner ELM OBD2 - Torque screenshot 5
Car Scanner ELM OBD2 - Torque screenshot 6

Transform your iPhone into a powerful car diagnostic tool. Read and clear trouble codes, monitor live vehicle sensor data, and understand check engine light warnings. Works with most vehicles manufactured since 1996 using standard OBD2 adapters.

More Diagnostic Tool To Check Engine Light apps to explore

FAQ about Diagnostic Tool To Check Engine Light

What are the best diagnostic tool to check engine light apps for iPhone?
FIXD OBD2 Scanner tops our diagnostic tool to check engine light apps ranking as of October 2026, with a 4.6-star average from 26K App Store ratings, and it's free to download.
Yes — 20 of the top diagnostic tool to check engine light apps we rank are free to download, including FIXD OBD2 Scanner and Car Scanner ELM OBD2.
FIXD OBD2 Scanner has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ diagnostic tool to check engine light apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.