hi the HDC fault light is on and HDC is not working all the other lights go out I have checked the codes and they are p1595. p1225, p0220 what could be the falt
 
there is no other 'fault' lights and it is uk car how would I check there is 12 mm of play at the throttle pedal?

It sounds like a pedal switch/ throttle pot timing issue. Has any work been done that would require the throttle cable be removed?
To check pedal free play you need a standard ruler. Place the ruler next to the pedal with it at rest. Then gently push the pedal down with your hand until you feel it get slightly stiffer to push. This is the point where the free play has been taken up. This free play movement should be around 12 mm or 1/2 " in old money. If the free play is not what is should be, post back and I'll explain how to correct it ;)
 
there is 12 mm of play at the throttle pedal

And the light is still coming on?
There are 2 possible faults related to the throttle. 1 pedal switch has been knocked out of adjustment. Make sure it's correctly pushed into the pedal pad. Or the TPS has failed which isn't very common. Was the light on before the cable was changed?
The only other reason for the light would be a faulty switch on the gearbox but that isn't common.
 
yes the light was on when I got the car changed the relay ,brake switch did not work so got a hawkeye when I clear all the faults the light goes out but as soon as I drive car abs light goes out hdc light comes on
 

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