Fault Codes

[Johnpacey1]

Alright guys. Been having some trouble with my Ph2 172. It went into limp mode today and the idling was all over. Had it on a code reder and it has thrown up 2 codes.

First one is P0500 which is the vehicle speed sensors, does anyone know where this is?

Second one was P0120 which said TPS, I know this is the throttle position sensor but is it the one in the throttlebody or in the pedal?

Also, can a faulty MAP sensor throw the TPS out?

Just trying to find out which to replace first, is it just start at cheapest part and work through till the problem is solved?

Any help would be appreciated.

 

[Aaron182.]

have fault code P0120 myself, my mates snap-on tool says its the pedal side of the TPS system.

 

[Johnpacey1]

All sorted now mate but yes it was the pedal.

Cheers.