Hi David
Sorry for the late reply, been offline and busy the last couple of days.
Access to that front sensor should be possible with the water tank/power steering tank cover removed, watch out for falling washers/inserts during removal. There should be some movement in the water tank/power steering tank without removing any hoses to assist with access. Not sure how easy it would be to get a spanner of the correct size on it for removal, I would expect it to be tight. Try removing and cleaning the connection first.
Good luck.
Regards, Terry
Sorry for the late reply, been offline and busy the last couple of days.
Access to that front sensor should be possible with the water tank/power steering tank cover removed, watch out for falling washers/inserts during removal. There should be some movement in the water tank/power steering tank without removing any hoses to assist with access. Not sure how easy it would be to get a spanner of the correct size on it for removal, I would expect it to be tight. Try removing and cleaning the connection first.
Good luck.
Regards, Terry