# OBD2 Trouble Code — OBD ll Code Reader Guide

> Mobile guide for looking up OBD2 check engine codes and their causes. (iPhone/iPad app by Hassan Benessafi.)

- Source: https://appshunter.io/ios/app/obd2-trouble-code/id1315353058 (this page in markdown: same URL + `.md`)
- Developer: [Hassan Benessafi](https://appshunter.io/developer/1463795701)
- Category: Utilities, Reference
- Price: Free
- Rating: 3.30/5 from 306 App Store ratings · 73 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 24 MB
- Languages: American English
- Released: 2017-11-20
- Data updated: 2026-09-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/obd2-trouble-code/id1315353058/reviews.md

## What is OBD2 Trouble Code?

OBD2 Code Guide app to look up your car check engine code on the go, powered by the web's largest database of OBD2 code library. 

Get the description and the possible cause of the check engine code by searching for the code for all of the major manufacturers and now with quick access to your search history and save results to for use at a later date.

## Key features

- OBD2 code lookup
- Check engine code descriptions
- Possible cause identification
- All major manufacturers supported
- Search history
- Save results

## What do users think of OBD2 Trouble Code?

Overall sentiment: negative

**Pros**

- 📚 Comprehensive OBD code database
- 👍 Easy to navigate interface
- 💡 Helpful for understanding car diagnostic codes
- ⚡ Useful for mechanical troubleshooting

**Cons**

- 😤 Forced review requirement before app usage
- 📺 Excessive ads throughout the app
- 🔋 High battery consumption
- 🚫 App won't function without review completion
- ⚠️ Misleading review-gating mechanism
- 📵 Requires internet connection for basic features

**Commonly reported bugs**

- App crashes or won't open without review
- Ads prevent normal app usage
- More info button doesn't expand for some codes
- Incompatibility with certain vehicle models
- Mislabeled codes (P0450-P0459)
- Connection issues with some OBD readers

**Most requested features**

- More detailed code explanations
- Offline functionality
- Better navigation for new users
- Support for codes without letter prefixes
- Expanded information sections for specific codes

## Recent user reviews (10 of 73)

All indexed reviews: https://appshunter.io/ios/app/obd2-trouble-code/id1315353058/reviews.md

### 1/5 — Was good

*2026-07-08*

Used this tool a lot. Now it’s getting deleted. Can’t get past the review page. Why ruin a good thing?

### 1/5 — Crazy

*2026-01-31, version 1.0*

Never mind. There is no app. Just keeps making you watch ads and nothing else

### 1/5 — Super usefull!!

*2025-11-15, version 1.0*

Won’t even let you in the app if you don’t rate it

### 1/5 — Ridiculous

*2025-09-19*

Can’t even open the app without having to review it.  So, you get one star, because I couldn’t give you ZERO stars. You wasted my time and were NOT at all helpful. I’m trying to find out what happened to my car and you want a review for doing NOTHING

### 1/5 — Trash this app is trash

*2025-05-18*

This app is complete. Garbage does not do anything until you review it.

### 1/5 — Can’t use

*2025-03-13*

I can’t figure out how to use it just sends me to the review page

### 4/5 — Figured out how to get in

*2025-02-16*

When you open the app and it makes you review the app. What you need to do is get on the app and turn off your Wi-Fi and turn off your data then press skip then it might make you watch a add but after the add just press skip again then it will work

### 3/5 — Want to use app

*2025-01-07*

Forcing me to review before I’ve had a chance to use the app.

### 1/5 — Can’t use

*2024-12-24*

I can’t figure out how to use it just sends me to the review page

### 1/5 — To many adds

*2024-12-04, version 1.0*

This was great but now has to many adds and wants you to review it before using the app

## Frequently asked questions about OBD2 Trouble Code

### What does the OBD2 Trouble Code app do?

This app allows you to look up your car's OBD2 check engine codes directly from your mobile device. It provides descriptions of the codes and suggests possible causes, drawing from a large online database.

### What are the key features of this OBD2 app?

Key features include the ability to search for OBD2 codes for all major car manufacturers, view detailed code descriptions and potential causes, access your search history, and save results for later use.

### Is this app free to use?

Yes, the application is free to use. It does not have in-app purchases or advertisements, meaning you can access all its features without any cost.

### Who is the target audience for the OBD2 Trouble Code app?

The app is designed for car owners and amateur mechanics who want to understand what their car's check engine light means without needing to visit a professional immediately.

### How does the app help with car diagnostics?

By providing quick access to a comprehensive library of OBD2 codes, the app empowers users to understand diagnostic trouble codes (DTCs) reported by their vehicle's onboard computer, helping them identify potential issues.

## Version history (last 1 release)

### 1.0 — 2017-11-20

This app has been updated by Apple to display the Apple Watch app icon.

## Apps similar to OBD2 Trouble Code

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| --- | --- | --- | --- |
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All apps by Hassan Benessafi: https://appshunter.io/developer/1463795701

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*