Hello,

First post, and I'm afraid it's a problem.

I've got a lovely 52 plate 1.6 petrol Focus Ghia. Fallen for it totally.

It's had a full service last week, passed the MOT with flying colours.

Drove into work today, and it was fine. Left it parked for three hours (it was chucking it down) and nipped out to the local shops.

As soon as I turned it on the engine warning light came on, and stayed on.

I've tried the old diagnostics with the tripometer on engine start, and no error code is being given - just says none.

The engine is running fine, revving as normal, no backfires, gear changes are smooth.

Oil's fine and all the fluids are bang on.

Obviously she's going back to the dealer under warranty (they also need to fix a few niggles like the 12v sockets aren't working).

Just as bit of peace of mind does anyone know what this could be? All I've read is point towards the sparkplugs (although I'd hope they'd have been checked last week during the service!!)

Thanks for any advice you folks have.

Matt

 

You really need a diagnostic run on it mate to get any fault codes that are stored.

 

My cash is on the O2 sensor, also known as the HUGO or LAMBDA sensor

 

Nice one.

Thanks for the advice. From the sounds of a failing O2 sensor, I think my old Ka had one for the last two years of her life!

 

As you said post cat O2 sensor.

Thanks for the heads up, saved me worrying until I could get it to a garage!

 

Almost certainly lambda sensor as mentioned above. As for the 12V socket, check the fuses behind the glovebox. Can't remember number off the top of my head number 36 or 37 or 46 or 47 I think. Underside of the glovebox tells you should be 15A I think in there. I've stuck a 25A in because my bloody 12V air compressor keeps blowing them on the initial plug in.