Enter your DTC code and vehicle info. Get your #1 cause free, then unlock the full repair report for $5.99.
Generic code lookups tell you what the code means. This tells you what's actually broken on your specific vehicle, and what to do about it.
| What you get | AmpAuto | Shop diagnostic |
|---|---|---|
| Price | $5.99 | $120–$200 |
| Time to result | 30 seconds | 1–4 hours |
| Causes ranked by likelihood | ✓ | ✗ |
| Specific to your exact vehicle | ✓ | ✓ |
| Parts list & cost estimate | ✓ | Sometimes |
| Have to leave the house | No | Yes |
| Money-back guarantee | ✓ | ✗ |
All standard P (powertrain), B (body), C (chassis), and U (network) codes from 1996 and newer vehicles. Enter one code or multiple codes separated by commas for a combined diagnosis.
If you already have a code from a previous scan or a shop printout, enter it directly - no additional equipment needed. For a more accurate diagnosis, a Bluetooth OBD2 scanner also lets you read live sensor data, which can make the difference between a $50 fix and an $800 mistake.
Our reports rank causes by probability based on your specific vehicle's year, make, model, mileage, and symptoms - cross-referenced with NHTSA complaint data and known failure patterns. The goal is to tell you which cause is statistically most likely for your exact car, not just for "a car with P0420."
All 3 ranked causes with probability scores, a step-by-step repair guide, complete parts list with part numbers, labor hour and cost estimates, a printable mechanic-ready summary, and any relevant recalls or TSBs for your VIN.
Yes. After unlocking, you get a formatted mechanic-ready summary you can copy, print, or share directly. Most customers paste it into a text to their shop or bring a printed copy - shops consistently confirm the diagnosis.
Real causes, real costs, step-by-step fixes for the problems drivers Google most.