Best Obdii Trouble Codes Apps

241+ iOS apps curated and reviewed

3.6 avg rating
17 free apps
Updated August 2026

Looking for free obdii trouble codes apps? 17 of our 241+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Obdii Trouble Codes Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1OBDII Trouble CodesOBDII Trouble Codes$3.99NoNoJul 2026
2OBDII Trouble Codes LiteOBDII Trouble Codes LiteFree2.1★ (7)YesYesAug 2026
3OBDII Scanner ELM327 OBD2OBDII Scanner ELM327 OBD2Free3.4★ (5)NoYesAug 2026
4OBD2 Car Scanner - EOBD FacileOBD2 Car Scanner - EOBD FacileFree4.6★ (5K)NoYesAug 2026
5OBD2 Enhance Trouble CodesOBD2 Enhance Trouble Codes$2.995.0★ (2)NoNoAug 2026
6OBD2 Enhance Trouble Code LiteOBD2 Enhance Trouble Code LiteFree4.6★ (7)YesNoAug 2026
7Mini OBDIIMini OBDIIFree3.4★ (5)NoNoMay 2026
8OBDII Terminal - ELM327OBDII Terminal - ELM327FreeNoNoAug 2026

Top Picks for Obdii Trouble Codes

OBDII Trouble Codes#1

OBDII Trouble Codes by Oleg Chumakov

Car diagnostic code database
Editor's Choice
🔧 Utilities
0.0(0 ratings)
$3.99
OBDII Trouble Codes screenshot 1
OBDII Trouble Codes screenshot 2
OBDII Trouble Codes screenshot 3

Access a comprehensive offline database of over 18,500 diagnostic trouble codes for cars. Simply enter a fault code to get detailed descriptions without needing an internet connection or car model selection.

OBDII Trouble Codes Lite#2

OBDII Trouble Codes Lite by Oleg Chumakov

Car diagnostic database
Strong Contender
🔧 Utilities
2.1(7 ratings)
FreeAdsIn-App Purchases
OBDII Trouble Codes Lite screenshot 1
OBDII Trouble Codes Lite screenshot 2
OBDII Trouble Codes Lite screenshot 3

Access a comprehensive database of OBD II diagnostic trouble codes. Quickly look up definitions for generic and manufacturer-specific codes without an internet connection. Easily copy and share code descriptions.

OBDII Scanner ELM327 OBD2#3

OBDII Scanner ELM327 OBD2 by paul moore

OBD2 Scanner and Trouble codes
Worth Considering
🔧 Utilities
3.4(5 ratings)
FreeIn-App Purchases
OBDII Scanner ELM327 OBD2 screenshot 1
OBDII Scanner ELM327 OBD2 screenshot 2
OBDII Scanner ELM327 OBD2 screenshot 3
OBDII Scanner ELM327 OBD2 screenshot 4
OBDII Scanner ELM327 OBD2 screenshot 5
OBDII Scanner ELM327 OBD2 screenshot 6

This app allows you to scan your car's trouble codes and view live data using an OBD2 Bluetooth adapter. It logs statistics and freeze frames for future reference, storing all diagnostic trouble codes (DTCs) on a server.

More Obdii Trouble Codes apps to explore

4
OBD2 Car Scanner - EOBD Facile
OBD2 Car Scanner - EOBD Facile
OBD2 Car Scanner - EOBD Facile
Torque & ELM327 OBD Diagnostic
Free

Transform your smartphone into a professional car diagnostic tool. Read and clear engine fault codes, monitor real-time sensor data, and perform advanced diagnostics without a mechanic. Supports a wide range of OBD2 compliant vehicles.

Read and clear engine fault codesMonitor real-time sensor dataTurn off check engine light
🔧 Utilities
(5K)
free with in-app purchases
5
OBD2 Enhance Trouble Codes
OBD2 Enhance Trouble Codes
OBD2 Enhance Trouble Codes
Find DTCs Definition and Cause
$2.99

This app provides definitions and potential causes for On Board Diagnostics (OBD) trouble codes. It helps users quickly identify and understand car diagnostic codes to facilitate repairs.

200,200+ diagnostic trouble code definitionsAccurate definitions from workshop manualsPossible causes for quick fixes
🔍 Reference
(2)
paid
6
OBD2 Enhance Trouble Code Lite
OBD2 Enhance Trouble Code Lite
OBD2 Enhance Trouble Code Lite
Find DTCs Definition and Cause
Free

This app provides definitions and potential causes for On-Board Diagnostics (OBD) trouble codes. It covers a wide range of generic and manufacturer-specific codes for numerous vehicle models, helping users understand and potentially fix error codes.

DTC definitions from workshop manualsPossible causes for error codesCovers 73 vehicle models
🔍 Reference
(7)
ad-supported
7
Mini OBDII
Mini OBDII
Mini OBDII
OBD Tool
Free

This app connects to your vehicle via Bluetooth or WiFi to perform diagnostics and monitor driving. It reads and clears fault codes, analyzes performance, and tracks your travel data. Supports multiple languages and high-speed data transmission.

Fault code reading and clearingInstrument panel monitoringPerformance testing
🔧 Utilities
(5)
free
8
OBDII Terminal - ELM327
OBDII Terminal - ELM327
OBDII Terminal - ELM327
OBDII Terminal for Developer
Free
🛠️ Developer Tools
(0)
9
DiagonalOBDII
DiagonalOBDII
DiagonalOBDII
OBDII Drive Cycle App
Free

This app helps mechanics perform vehicle drive cycles more efficiently. It provides real-time monitoring of emissions monitors and diagnostic trouble codes (DTCs), offering clear guidance and instant explanations to ensure vehicles pass inspection quickly and accurately.

Live drive cycle monitoringImmediate diagnostic trouble code (DTC) identificationReal-time emissions monitor status
📊 Productivity
(1)
free with in-app purchases
10
UJS OBDII
UJS OBDII
UJS OBDII
OBD Tool
Free

This professional car diagnostic app connects to UJS OBDII devices via Bluetooth to read and clear fault codes, monitor real-time vehicle performance, and analyze travel data. It supports multiple languages and offers high-speed, low-power data transmission.

Fault code reading and clearingReal-time instrument panel displayVehicle performance testing
🔧 Utilities
(1)
free
11
OBD2 Trouble Code
OBD2 Trouble Code
OBD2 Trouble Code
OBD ll Code Reader Guide
Free

Instantly look up your car's check engine codes on the go. Access a vast database of OBD2 codes with descriptions and potential causes for all major manufacturers. Save your search history for quick reference.

OBD2 code lookupCheck engine code descriptionsPossible cause identification
🔧 Utilities
(297)
free
12
OBD ll Codes Multi Language
OBD ll Codes Multi Language
OBD ll Codes Multi Language
obd2 codes list
Free

Instantly look up your car's check engine code with this comprehensive guide. Access descriptions and potential causes for codes from major manufacturers, supporting 15 languages. Empower yourself with knowledge to avoid being overcharged by mechanics.

OBD2 code lookupCheck engine code descriptionsPossible cause identification
🔧 Utilities
(6)
free
13
OBD2 Codes Pro Auto offline
OBD2 Codes Pro Auto offline
OBD2 Codes Pro Auto offline
Complete List of OBD Codes
Free

Access a comprehensive offline database of OBD2 (OBDII) codes for all major car manufacturers. Look up check engine codes, view descriptions, and identify possible causes on the go. Save your search history for quick reference.

Offline OBD2 code databaseGeneric and manufacturer-specific codesCheck engine code descriptions
🔧 Utilities
(15)
free
14
OBD2 Fault Codes with Solution
OBD2 Fault Codes with Solution
OBD2 Fault Codes with Solution
Get in-depth Explanations
Free

Decode automotive trouble codes with a comprehensive database and detailed explanations. Find step-by-step guides to diagnose and resolve issues, making car maintenance accessible for all users.

OBD2 code databaseDetailed code descriptionsSolution guides
📚 Education
(3)
free with in-app purchases
15
Infocar - OBD2 ELM Scanner
Infocar - OBD2 ELM Scanner
Infocar - OBD2 ELM Scanner
OBD2 scanner & car diagnostic
Free

Monitor your vehicle's health and performance with this app. It offers real-time diagnostics, driving style analysis, and maintenance tracking. Connect to your car's OBD2 scanner for detailed insights and improved driving habits.

Vehicle diagnostics and fault code clearingReal-time sensor data monitoringCustomizable dashboard with HUD
🔧 Utilities
(270)
free with in-app purchases
16
Obd2 Codes List
Obd2 Codes List
Obd2 Codes List
OBD ll (obd2) codes list
$0.99

Instantly look up check engine codes for virtually any car. Access a vast database of generic and manufacturer-specific fault codes with descriptions and potential causes, even offline.

Extensive OBD2 code databaseOffline accessSupports all major manufacturers
🔍 Reference
(2)
paid
17
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
Fear No Fix™
Free

This app turns your smartphone into a powerful OBD2 scan tool. It allows you to read and clear trouble codes, view live data, and generate detailed repair reports for your vehicle. Understand your car's issues and make informed repair decisions.

Read and clear trouble codes (Check Engine, ABS, etc.)Generate professional-grade Repair ReportsAccess Mode 6 and smog readiness data
📊 Productivity
(14K)
free with in-app purchases
18
OBDII AI
OBDII AI
OBDII AI
Support DA200 series products.
Free
🔧 Utilities
(0)
19
IAPMO Codes
IAPMO Codes
IAPMO Codes
Access to codes related info.
Free

Access and manage your purchased IAPMO codes, including the UPC, UMC, and others. Make annotations, record voice notes, and view content offline. Stay informed with code errata, committee information, and breaking news.

View purchased IAPMO codesOffline accessMake annotations
📚 Education
(6)
free
20
iOBD2-DTC
iOBD2-DTC
iOBD2-DTC
by Shenzhen Yunjia Intelligence Technology Co., Ltd.
Free

This app serves as a reference for standard Diagnostic Trouble Codes (DTCs) found in vehicles. It helps users understand fault codes generated by a car's onboard computer, aiding in problem diagnosis.

Diagnostic Trouble Code referenceFault code lookupVehicle system diagnostics
🔧 Utilities
(19)
free

FAQ about Obdii Trouble Codes

Are there free obdii trouble codes apps for iPhone?
Yes — 17 of the top obdii trouble codes apps we rank are free to download, including OBDII Trouble Codes Lite and OBDII Scanner ELM327 OBD2.
OBDII Trouble Codes has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 241+ obdii trouble codes apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
OBDII Trouble Codes is a paid utility app that provides an offline database of over 18,500 car diagnostic trouble code definitions. It allows users to quickly look up error codes without an internet connection.
OBDII Trouble Codes is a paid application, priced at $3.99. This one-time purchase grants access to the full offline database of diagnostic trouble codes.

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