Got a yellow cog with exclaimation mark inside it on my 07 transit van

have it scanned for trouble code

Not without knowing which of the more than 800 possible trouble codes is stored in your computer.http://ricksfreeautorepairadvice.com/check-engine-light-on-part-i/
Check engine light on Part Ricks Free Auto Repair Advice

which mark version /model /year transit van do you have

most starter motors for the ford transit diesel or petrol
show pictures as only two bolts to hold them on
between exhaust and motor/gearbox housing

Ford Transit Starter Motor Starter Motor For Sale New and Used

this one with three bolts may be a bit of a problem


FORD TRANSIT MK3 MK4 MK5 2.5 D Di TD 2.5 DIESEL NEW RMFD STARTER MOTOR 86-00

This is NOT a Tyre pressure sensor warning!
Don't know why people post this when they haven't got the foggiest idea.
It is a fault associated with the drivetrain which includes from the injectors on the engine to the transmission and possibly just a sensor malfunction.
There are multiple errors possible with this fault.
Requires a diagnostic OBD2 port analysis of the ECU to clear the fault codes and further analysis.

Look for a fuse box inside the vehicle or outside where the engine is.

check that the timing belt/ chain is intact by seeing if the cam shaft is turning. Run fault codes to check for sensor failure.

check for damage when the wheel came off check for bent axle/ shaft/stub axle. There are sensors in the hub for the ABS and ride control and they may be damaged / wiring damaged . Check the wheel bearings for condition and adjustment as if the bearings are loose then the air gap between the rotor and the sensor will be out and the sensor will be operating the CPU which may be putting it in limp mode. Check also for brake fluid levels as that also will affect the system

Its the Engine Management light. Yon need to get the fault codes read.

This light is for multi funtion automatic transmisson cooling system

Check Transmission indicator. It means that PCM has detected a problem in the transmission, It should have a trouble code stored in memory now that can be retrieved with a scan tool.