CarCoding: OBD2 Car Scanner

CarCoding: OBD2 Car Scanner

ELM327 Diagnostics & Coding

1 ratings
1 review
Free
In-App Purchases

Details

Released
July 19, 2026
Updated
October 31, 2026

Features

CarCoding: OBD2 Car Scanner screenshot #1 for iPhone
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CarCoding: OBD2 Car Scanner screenshot #9 for iPhone
CarCoding: OBD2 Car Scanner screenshot #10 for iPhone
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About

Diagnose vehicle faults, read live data, and unlock hidden features using your phone and an OBD2 scanner. This app helps you understand engine codes, monitor performance, and perform service resets.

✓Read and clear fault codes (DTC)
✓AI fault analysis
✓Live engine data and gauges
✓Used car inspection readiness
✓Service resets (oil, EPB, DPF)
✓ECU coding and hidden features
✓Motorcycle and truck diagnosis
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+2

What's New in CarCoding

1.3.72

October 31, 2026

• Mercedes-Benz: coding settings can now be read and changed (W205 start-stop default, welcome lights and more). • GM (Chevrolet, Cadillac, GMC, Buick): fault code clearing that did nothing on some modules is fixed; permanent faults that cannot be cleared are shown separately. • Volkswagen group: when a body module's coding block cannot be read, the screen now says why. • BMW E series: coding writes through remote support are fixed.

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Subscriptions & In-App Purchases

CarCoding Pro Annual

Unlimited AI Mechanic. Save 33% with yearly billing.

$71.901 Year
How to cancel CarCoding subscription ⁉️

User reviews

So much potential meh

The app looks great
The app connected and showed vin and coolant
The app did not recognize Chevy GMC etc etc domestic us brands and offered no way to upgrade the app or catalog of vehicles
I’m sure when I get a chance to try on a Japanese car or German car it will be worth having. But without domestic USA cars being recognized most mechanics will not rave hype or promote in reviews. It’s coding plain and simple the database is far from complete. I do like the search and country flag feature just looks like USA is mostly omitted from the app.
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Response from developer

Honestly, this review stung a little, but you were right and we needed to hear it. American vehicles were not getting the attention they should have, and that's on us. So we spent the last stretch fixing it properly. Chevy and GMC are in now, along with Chrysler, Dodge, RAM, Cadillac, Buick, Jeep, Lincoln and Ford. That includes the trucks and full-size stuff people actually drive here, like the Silverado, Sierra, F-150, RAM 1500, Tahoe and the Charger and Challenger. We also went back for the older pre-CAN models so the higher-mileage rigs are not left out. While we were at it we widened coverage for the rest of the world too and improved the EV battery and tire-pressure readings. If your Chevy or GMC didn't come up before, give it another shot after this update. And if it's still not perfect, tell us the exact make, model and year right here and we'll get it into the next one. We're a small team and we read every one of these, so a review like yours actually changes what we build. If you feel like the app earned a second look, we'd really appreciate you updating the rating. Either way, thanks for pushing us to do better.

Developer apps

FAQ

What is CarCoding?

CarCoding is a vehicle fault diagnosis and ECU coding app that works with ELM327 OBD2 scanners. It allows you to read and clear fault codes, view live data, reset service indicators, and unlock hidden vehicle features.

What types of fault codes can CarCoding read?

CarCoding can read standard P-codes as well as manufacturer-specific B, C, and U codes across engine, transmission, ABS, airbags, and body modules. It provides descriptions in plain language.

Does CarCoding offer live data monitoring?

Yes, CarCoding features a digital gauge panel to track RPM, coolant temperature, oil temperature, boost pressure, fuel trim, and battery voltage in real time. You can also design your own gauges and record drives.

Can CarCoding perform service resets?

Yes, CarCoding supports service resets for oil changes, electric park brake (EPB) service mode, DPF regeneration, steering angle sensor (SAS) calibration, and TPMS reset.

What are the subscription options for CarCoding Pro?

CarCoding Pro offers monthly ($7.99), 6-month ($39.95), and annual ($71.90) subscription plans, providing access to advanced features and full functionality.

Is CarCoding available on all devices?

CarCoding is supported on iPhone, iPad, and iPod devices, running on iOS. It requires a Bluetooth (BLE) or Wi-Fi ELM327 OBD2 adapter to connect to your vehicle.

How often is CarCoding updated?

The latest version of CarCoding is 1.3.72, and it was last updated on October 31, 2026. Updates typically include new features, bug fixes, and improved compatibility.

What is the age rating for CarCoding?

CarCoding has an age rating of 17+, indicating it is intended for mature users due to the technical nature of vehicle diagnostics and coding.