Free tool
Trouble codes in plain English
187 generic OBD-II codes: what each one means and, for 178 of them, what usually causes it, what to check first and what the repair typically costs. It is the same library Drive DTC reads on the vehicle.
- Free to use
- No account, nothing installed
- The library the app uses
Engine management
26 codesFuel and air
73 codesIgnition and misfires
25 codesEmissions
12 codesIdle, speed and cruise
7 codesComputer and outputs
4 codesTransmission
24 codesBrakes, ABS and chassis
4 codesBody and airbags
4 codesNetwork and modules
8 codesNo code matches that
Try the first three characters, like P03 for misfires or P04 for emissions. Ford-specific codes (P1xxx, B1xxx, C1xxx, U1xxx) aren't in this library – the app reports them as such rather than guessing.
Drive DTC
Your vehicle knows more than the code
A stored code is a headline, not the story. The vehicle also holds the conditions from the moment the code set, how close each part is to the limit it fails at, what the fuel trims are doing, and whether the fault is still happening. Drive DTC reads all of it with a USB adapter and a Windows PC – read-only by design.
- Free to start
- Codes in plain English
- One-time purchases, no subscription
Code titles are the generic SAE definitions. Prices are typical US parts and labor for a common car or light truck – a guide for judging a quote, not a quote. Always confirm a repair against the vehicle in front of you.