GreaseGenius: OBD2 Code Reader
In-app purchases
Everyone
info
10+
Downloads
About this app
No scanner. No dongle. No $150 diagnostic fee.
GreaseGenius is a check engine light code reader and car diagnostic app that needs zero hardware. Every other OBD2 app is useless until you buy a $15-$120 Bluetooth adapter and pair it under your dash. GreaseGenius just needs the trouble code you are already staring at - or a plain-English description of what your car is doing.
Type P0420. Get a real answer.
WHY THIS IS DIFFERENT FROM EVERY OTHER OBD2 APP
Torque, Car Scanner, FIXD, BlueDriver, Carly, OBDeleven - every one of them is dead without an adapter, and the most common complaint about all of them is the same three words: "won't connect." GreaseGenius has nothing to connect. Nothing to buy, carry, charge, or pair.
IT TELLS YOU WHAT TO DO - NOT JUST WHAT'S WRONG
A code reader shows you "P0420" and stops. A parts store scan reads the code free but never tells you the part is $40 instead of $400. GreaseGenius answers the four questions that actually matter: what is really broken, how urgent is it, can YOU fix it, and what should the part really cost.
ASK THE AI MECHANIC
Type it like you would say it: "shakes when I brake," "ticking at cold start," "AC blows warm." You get the most likely cause, how urgent it is, and an honest DIY-or-shop call - tailored to your exact year, make, model and engine.
CHECK ENGINE CODE LOOKUP - EVERY OBD-II TROUBLE CODE
P0420, P0300, P0171, P0455, P0128 and thousands more. See what the fault code actually means in plain English, the usual causes listed cheapest-first, and what the repair typically runs. Sometimes that check engine light is a $15 gas cap. We will tell you that. A shop won't.
SAFETY RECALLS - FREE, FROM NHTSA
See every recall issued for your year, make and model, plus real owner complaints so you know what others are reporting. Recall repairs are always free at a dealer - we tell you that too.
FIND A PART
Once you know what is broken, price the part for your exact vehicle across several retailers - so you are not guessing whether it is $40 or $400.
SYMPTOM CHECKER - WORKS COMPLETELY OFFLINE
Walk through a guided diagnosis and narrow it down fast. The knowledge base is built into the app, so it works with no signal at all - parking garage, roadside, dead zone.
STEP-BY-STEP DIY REPAIR GUIDES
Oil changes, brake pads, tire rotation and more - with the tools, torque specs and safety steps to do the job right the first time and keep the labor money in your pocket.
BUILT AROUND YOUR CAR
Enter your VIN or pick your year, make, model and engine once. From then on every answer, part and guide is matched to what you actually drive.
24+ LANGUAGES
Use the whole app in the language you actually think in.
PERFECT FOR
- The check engine light just came on and you want to know if it's serious
- A shop quoted you a number and it felt high
- You are buying a used car and want to know what that code means before you hand over cash
- AutoZone or O'Reilly read your code for free and you still don't know what to do about it
- You would rather fix it yourself and keep the labor
FREE - NO ACCOUNT, NO CARD
- 5 AI questions a day, free
- No sign-up, no email, no credit card
- Symptom checker, code lookup, safety recalls and repair guides, free to use
GREASEGENIUS PRO
Go Pro when you want unlimited AI diagnoses and follow-up questions.
$2.99/month or $19.99/year. Cancel anytime in Google Play.
AN HONEST WORD
GreaseGenius is a smart diagnostic assistant, not a replacement for a hands-on professional inspection. A trouble code points at the most likely cause - often that part, not always - and the same repair can cost more on one car than another. So you get the odds, the range, and the right questions to ask. Brakes, steering and overheating are life-safety items: have a professional inspect them before you drive on it.
GreaseGenius doesn't replace your mechanic. It replaces walking in blind.
Your car. Your money. Your call.
Questions or feedback? Visit https://greasegenius.ai
GreaseGenius is a check engine light code reader and car diagnostic app that needs zero hardware. Every other OBD2 app is useless until you buy a $15-$120 Bluetooth adapter and pair it under your dash. GreaseGenius just needs the trouble code you are already staring at - or a plain-English description of what your car is doing.
Type P0420. Get a real answer.
WHY THIS IS DIFFERENT FROM EVERY OTHER OBD2 APP
Torque, Car Scanner, FIXD, BlueDriver, Carly, OBDeleven - every one of them is dead without an adapter, and the most common complaint about all of them is the same three words: "won't connect." GreaseGenius has nothing to connect. Nothing to buy, carry, charge, or pair.
IT TELLS YOU WHAT TO DO - NOT JUST WHAT'S WRONG
A code reader shows you "P0420" and stops. A parts store scan reads the code free but never tells you the part is $40 instead of $400. GreaseGenius answers the four questions that actually matter: what is really broken, how urgent is it, can YOU fix it, and what should the part really cost.
ASK THE AI MECHANIC
Type it like you would say it: "shakes when I brake," "ticking at cold start," "AC blows warm." You get the most likely cause, how urgent it is, and an honest DIY-or-shop call - tailored to your exact year, make, model and engine.
CHECK ENGINE CODE LOOKUP - EVERY OBD-II TROUBLE CODE
P0420, P0300, P0171, P0455, P0128 and thousands more. See what the fault code actually means in plain English, the usual causes listed cheapest-first, and what the repair typically runs. Sometimes that check engine light is a $15 gas cap. We will tell you that. A shop won't.
SAFETY RECALLS - FREE, FROM NHTSA
See every recall issued for your year, make and model, plus real owner complaints so you know what others are reporting. Recall repairs are always free at a dealer - we tell you that too.
FIND A PART
Once you know what is broken, price the part for your exact vehicle across several retailers - so you are not guessing whether it is $40 or $400.
SYMPTOM CHECKER - WORKS COMPLETELY OFFLINE
Walk through a guided diagnosis and narrow it down fast. The knowledge base is built into the app, so it works with no signal at all - parking garage, roadside, dead zone.
STEP-BY-STEP DIY REPAIR GUIDES
Oil changes, brake pads, tire rotation and more - with the tools, torque specs and safety steps to do the job right the first time and keep the labor money in your pocket.
BUILT AROUND YOUR CAR
Enter your VIN or pick your year, make, model and engine once. From then on every answer, part and guide is matched to what you actually drive.
24+ LANGUAGES
Use the whole app in the language you actually think in.
PERFECT FOR
- The check engine light just came on and you want to know if it's serious
- A shop quoted you a number and it felt high
- You are buying a used car and want to know what that code means before you hand over cash
- AutoZone or O'Reilly read your code for free and you still don't know what to do about it
- You would rather fix it yourself and keep the labor
FREE - NO ACCOUNT, NO CARD
- 5 AI questions a day, free
- No sign-up, no email, no credit card
- Symptom checker, code lookup, safety recalls and repair guides, free to use
GREASEGENIUS PRO
Go Pro when you want unlimited AI diagnoses and follow-up questions.
$2.99/month or $19.99/year. Cancel anytime in Google Play.
AN HONEST WORD
GreaseGenius is a smart diagnostic assistant, not a replacement for a hands-on professional inspection. A trouble code points at the most likely cause - often that part, not always - and the same repair can cost more on one car than another. So you get the odds, the range, and the right questions to ask. Brakes, steering and overheating are life-safety items: have a professional inspect them before you drive on it.
GreaseGenius doesn't replace your mechanic. It replaces walking in blind.
Your car. Your money. Your call.
Questions or feedback? Visit https://greasegenius.ai
Read any check engine code: the cause, the DIY fix, the real cost. No scanner.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- No data shared with third partiesLearn more about how developers declare sharing
- This app may collect these data typesPersonal info, Financial info, and Device or other IDs
- Data is encrypted in transit
- You can request that data be deleted
What’s new
Adds eBay to the parts finder, so you can compare prices across more retailers before you buy.
App support
About the developer
THE ESCAPE DREAM LLC
theescapedreamllc@gmail.com
7901 4TH St N Ste 2340
Saint Petersburg, FL 33702-4305
United States
+1 727-494-4509
