This light came on with no effect on performance. One of the 02 sensor heater circuit was replaced but the warning light still came on. Finally the mechanic traced a short - a wire in the harness had been hanging down on the gear box. It had almost worn through causing the short and the warning light to come on.

Beware..

Not good, any other details in case it is engine and/or gearbox type specific?

 

I do think about removing the gearbox mounting mounting bracket bolt that kisses or impacts the wiring cable, I should really order in a new bolt and chop it down quite a bit so that it only just appears out from its captive nut, that has been an issue with some people.

Sorry I forgot the car details.

2012 Fabia Elegance 1.1 turbo petrol - bought Vat free at the time so good value.

Hope that helps.

Bob

Forgot to add it is an automatic 

Ta, you probably meant to list that engine as 1.2TSI with an Auto gearbox.