CarScan

Will it work with my car

It depends on one thing: whether the car has an OBD-II socket. Everything else the app sorts out itself.

Check your car

When the socket became mandatory

199420002006
USA and Canada
petrol 1996
Required on all cars and light trucks from the 1996 model year.
Europe
petrol 2001diesel 2004
Petrol from 2001, diesel from 2004. Those three years are exactly why a 2002 diesel often stays silent.
Other market
mid-2000s
Many countries never mandated it separately: the socket arrived together with emission rules. Mid-2000s is a rough guide — looking under the steering wheel is more reliable.

The gap between petrol and diesel in Europe is three years — that is exactly why a 2002 diesel often stays silent.

Protocols

Nothing to choose here: the adapter and the app determine the protocol themselves. The list is here so you can see there is no setup to do.

ISO 15765-4 (CAN)Almost every car from the mid-2000s onwards.
ISO 14230-4 (KWP2000)European and Asian cars from the early 2000s.
ISO 9141-2European and Asian cars, 1996 to 2004.
SAE J1850 VPWGM vehicles before the switch to CAN.
SAE J1850 PWMFord vehicles before the switch to CAN.

Where the socket is

  • Under the steering wheel, usually on the left, within half a metre of the column.
  • Sometimes behind a plastic cover, in the ashtray or under the fuse panel.
  • Sixteen pins in a trapezoid shape — it cannot be confused with anything else.
  • The ignition must be on: with the key off most modules stay silent.

What depends on the model

Fault codes, live data and the VIN are standard — they work the same everywhere. Service routines are not: the reset of a service interval is done differently by every maker, and on some cars it does not go through at all. The app says so in advance instead of trying blindly.

Why the service reset does not work everywhere

Short answers

Which cars does CarScan support?

Any car with an OBD-II socket: in the USA and Canada from the 1996 model year, in Europe petrol from 2001 and diesel from 2004. Fault codes, live data and the VIN are read on all of them.

Why does my 2002 diesel not answer?

In Europe the socket became mandatory for diesel engines only in 2004 — three years later than for petrol. A 2002 diesel may simply not have it.

Do I need to choose a protocol?

No. The adapter and the app work it out themselves — there is nothing to set up.

Where is the socket?

Under the steering wheel, usually on the left, within half a metre of the steering column. Sometimes behind a cover, in the ashtray or under the fuse panel.