Drive DTC

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 codes

Fuel and air

73 codes
P0100Mass air flow circuit P0101Mass air flow circuit range/performance P0102Mass air flow circuit low P0103Mass air flow circuit high P0106Manifold absolute pressure/barometric pressure circuit range/performance P0107Manifold absolute pressure/barometric pressure circuit low P0108Manifold absolute pressure/barometric pressure circuit high P0111Intake air temperature sensor 1 circuit range/performance P0112Intake air temperature sensor 1 circuit low P0113Intake air temperature sensor 1 circuit high P0116Engine coolant temperature circuit range/performance P0117Engine coolant temperature circuit low P0118Engine coolant temperature circuit high P0121Throttle/pedal position sensor A circuit range/performance P0122Throttle/pedal position sensor A circuit low P0123Throttle/pedal position sensor A circuit high P0125Insufficient coolant temperature for closed loop fuel control P0128Coolant thermostat (coolant temperature below regulating temperature) P0130O2 sensor circuit (Bank 1 Sensor 1) P0131O2 sensor circuit low voltage (Bank 1 Sensor 1) P0132O2 sensor circuit high voltage (Bank 1 Sensor 1) P0133O2 sensor circuit slow response (Bank 1 Sensor 1) P0134O2 sensor circuit no activity detected (Bank 1 Sensor 1) P0135O2 sensor heater circuit (Bank 1 Sensor 1) P0136O2 sensor circuit (Bank 1 Sensor 2) P0137O2 sensor circuit low voltage (Bank 1 Sensor 2) P0138O2 sensor circuit high voltage (Bank 1 Sensor 2) P0139O2 sensor circuit slow response (Bank 1 Sensor 2) P0141O2 sensor heater circuit (Bank 1 Sensor 2) P0150O2 sensor circuit (Bank 2 Sensor 1) P0151O2 sensor circuit low voltage (Bank 2 Sensor 1) P0152O2 sensor circuit high voltage (Bank 2 Sensor 1) P0153O2 sensor circuit slow response (Bank 2 Sensor 1) P0154O2 sensor circuit no activity detected (Bank 2 Sensor 1) P0155O2 sensor heater circuit (Bank 2 Sensor 1) P0156O2 sensor circuit (Bank 2 Sensor 2) P0157O2 sensor circuit low voltage (Bank 2 Sensor 2) P0158O2 sensor circuit high voltage (Bank 2 Sensor 2) P0159O2 sensor circuit slow response (Bank 2 Sensor 2) P0161O2 sensor heater circuit (Bank 2 Sensor 2) P0171System too lean (Bank 1) P0172System too rich (Bank 1) P0174System too lean (Bank 2) P0175System too rich (Bank 2) P0191Fuel rail pressure sensor A circuit range/performance P0192Fuel rail pressure sensor A circuit low P0193Fuel rail pressure sensor A circuit high P0201Injector circuit/open – cylinder 1 P0202Injector circuit/open – cylinder 2 P0203Injector circuit/open – cylinder 3 P0204Injector circuit/open – cylinder 4 P0205Injector circuit/open – cylinder 5 P0206Injector circuit/open – cylinder 6 P0207Injector circuit/open – cylinder 7 P0208Injector circuit/open – cylinder 8 P0217Engine coolant over-temperature condition P0234Turbocharger/supercharger A overboost condition P0236Turbocharger/supercharger boost sensor A circuit range/performance P0237Turbocharger/supercharger boost sensor A circuit low P0238Turbocharger/supercharger boost sensor A circuit high P0243Turbocharger/supercharger wastegate solenoid A P0245Turbocharger/supercharger wastegate solenoid A low P0246Turbocharger/supercharger wastegate solenoid A high P0299Turbocharger/supercharger A underboost condition P2195O2 sensor signal biased/stuck lean (Bank 1 Sensor 1) P2196O2 sensor signal biased/stuck rich (Bank 1 Sensor 1) P2197O2 sensor signal biased/stuck lean (Bank 2 Sensor 1) P2198O2 sensor signal biased/stuck rich (Bank 2 Sensor 1) P2263Turbocharger/supercharger boost system performance P2270O2 sensor signal biased/stuck lean (Bank 1 Sensor 2) P2271O2 sensor signal biased/stuck rich (Bank 1 Sensor 2) P2272O2 sensor signal biased/stuck lean (Bank 2 Sensor 2) P2273O2 sensor signal biased/stuck rich (Bank 2 Sensor 2)

Ignition and misfires

25 codes

Emissions

12 codes

Idle, speed and cruise

7 codes

Computer and outputs

4 codes

Transmission

24 codes

Brakes, ABS and chassis

4 codes

Body and airbags

4 codes

Network and modules

8 codes

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
Diagnose · Trouble codes
The Trouble codes screen in Drive DTC: stored, pending and permanent counts, then C0040-13 explained in plain English with what to check first, likely fixes in order and typical cost ranges

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.