efi fault code A

[leeroy343]

Everytime i switch the ignition on i get EFI Fault code A which means 'Speedo sensor not activating zero switch'but the speedo works fine, does anyone know what the problem is and how to fix it please?

thanks

lee

[infinity]

are you new to TVR? ;-)

be happy when everything works fine, it can be over any moment.

[Tuscan Wil]

I quote from mytuscan.co.uk under common problems

EFI fault errors normally occur up after washing the car or driving in heavy rain due to moisture getting into the sensor. Sometimes the error will display when the car is first started from cold if all the cylinders aren't firing properly yet, but goes away after the car warms up a bit.

If the EFI error is persistent (i.e. comes back when cancelled) and the car isn't running properly and not idling then it could be an electronic part failure e.g. lambda sensor, or some other failure.