Best Obdii Code Apps

244+ iOS apps curated and reviewed

3.7 avg rating

18 free apps

Updated September 2026

If you already know OBDII Trouble Codes Lite, this is the deeper bench. 244+ obdii code apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Obdii Code Apps (September 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	OBDII Trouble Codes Lite	Free	2.1★ (7)	Yes	Yes	Aug 2026
2	OBDII Trouble Codes	$3.99	—	No	No	Jul 2026
3	OBDII Scanner ELM327 OBD2	Free	3.4★ (5)	No	Yes	Aug 2026
4	DiagonalOBDII	Free	5.0★ (1)	No	Yes	Aug 2026
5	OBDII Terminal - ELM327	Free	—	No	No	Sep 2026
6	Mini OBDII	Free	3.4★ (5)	No	No	Aug 2026
7	OBD Compass	Free	—	No	No	Aug 2026
8	OBD2 Fault Codes with Solution	Free	3.7★ (3)	Yes	Yes	Aug 2026

Top Picks for Obdii Code

#1

OBDII Trouble Codes Lite by Oleg Chumakov

Car diagnostic database

Editor's Choice

2.1(7 ratings)

FreeAdsIn-App Purchases

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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.

#2

OBDII Trouble Codes by Oleg Chumakov

Car diagnostic code database

Strong Contender

0.0(0 ratings)

$3.99

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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.

#3

OBDII Scanner ELM327 OBD2 by paul moore

OBD2 Scanner and Trouble codes

Worth Considering

3.4(5 ratings)

FreeIn-App Purchases

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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 Code apps to explore

OBDII Drive Cycle App

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

free with in-app purchases

OBDII Terminal - ELM327

OBDII Terminal - ELM327

OBDII Terminal - ELM327

OBDII Terminal for Developer

🛠️ Developer Tools

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

Smart Scanner In Your Pocket

OBD2 Fault Codes with Solution

OBD2 Fault Codes with Solution

OBD2 Fault Codes with Solution

Get in-depth Explanations

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

free with in-app purchases

BlueDriver OBD2 Scan Tool

BlueDriver OBD2 Scan Tool

BlueDriver OBD2 Scan Tool

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

free with in-app purchases

OBD2 Car Scanner - EOBD Facile

OBD2 Car Scanner - EOBD Facile

OBD2 Car Scanner - EOBD Facile

Torque & ELM327 OBD Diagnostic

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

free with in-app purchases

OBD2 Enhance Trouble Code Lite

OBD2 Enhance Trouble Code Lite

OBD2 Enhance Trouble Code Lite

Find DTCs Definition and Cause

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

OBD2 Codes Pro Auto offline

OBD2 Codes Pro Auto offline

OBD2 Codes Pro Auto offline

Complete List of OBD Codes

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

MotorData OBD ELM car scanner

MotorData OBD ELM car scanner

MotorData OBD ELM car scanner

Car diagnostic. Dashboard.

Transform your smartphone into a comprehensive car diagnostic tool. Read and clear trouble codes, monitor real-time vehicle performance, and customize your dashboard for a deeper understanding of your car's health. Includes free engine diagnostics with optional advanced features for specific brands.

Deep diagnostics for up to 25 ECUsOne-touch scan for trouble codesDecode DTCs and clear Check Engine Light

free with in-app purchases

Torque OBD 2 & Car Pro

Torque OBD 2 & Car Pro

Torque OBD 2 & Car Pro

OBD2,OBDII,ELM327 scan tools!

Easily connect to your car's OBD2 port to monitor its performance in real-time. The app guides you through the connection process and supports various OBDII protocols for comprehensive diagnostics.

Real-time car data monitoringOBD2 port location guideConnect via WiFi to OBDII/ELM327 devices

OBD2 Trouble Code

OBD2 Trouble Code

OBD2 Trouble Code

OBD ll Code Reader Guide

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

OBD2 Scanner | OBD Auto Doctor

OBD2 Scanner | OBD Auto Doctor

OBD2 Scanner | OBD Auto Doctor

Car Diagnostics & Check Engine

Diagnose your car's engine light issues and monitor real-time performance data. This app allows you to read and clear diagnostic trouble codes, track fuel consumption, and view sensor data. It's a comprehensive tool for understanding your vehicle's health.

Read and clear OBD2 diagnostic trouble codes (DTC)Reset Check Engine LightMonitor real-time vehicle data and sensor readings

free with in-app purchases

OBD ll Codes Multi Language

OBD ll Codes Multi Language

OBD ll Codes Multi Language

obd2 codes list

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

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

CarCoding: OBD2 Car Scanner

CarCoding: OBD2 Car Scanner

CarCoding: OBD2 Car Scanner

ELM327 Diagnostics & Coding

OBDify Car Diagnostic

OBDify Car Diagnostic

OBDify Car Diagnostic

OBD2 scanner, coding & DTC

FAQ about Obdii Code

What are the best obdii code apps for iPhone?

OBDII Trouble Codes Lite tops our obdii code apps ranking as of September 2026, with a 2.1-star average from 7 App Store ratings, and it's free to download.

Are there free obdii code apps for iPhone?

Yes — 18 of the top obdii code apps we rank are free to download, including OBDII Trouble Codes Lite and OBDII Scanner ELM327 OBD2.

Does OBDII Trouble Codes Lite have ads or in-app purchases?

OBDII Trouble Codes Lite shows ads and offers in-app purchases, according to its App Store listing as of September 2026.

How many obdii code apps are on the App Store?

We track 244+ obdii code apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.

What is the price of OBDII Trouble Codes Lite?

OBDII Trouble Codes Lite is available for free. However, there is a full version available for purchase that unlocks additional features and code descriptions.

How often is OBDII Trouble Codes Lite updated?

The latest version of OBDII Trouble Codes Lite is 3.0, which was last updated on November 11, 2024. Updates are released periodically to add new codes and improve functionality.