P0601 (EPC & Emission lights on)

Hello everybody.

A little help needed please for the above fault on my wife's 2005 Leon 2 litre TSFI.

The EPC light came on followed later the same day by the Emissions light (the engine block symbol). The car runs perfectly and shows no sign of a fault.
I cleared the fault lights with my Generic OBD reader, but they reappear almost instantly after a subsequent start up.

The car was taken to an independent garage who also confirmed P0601(Internal Checksum Error) but were unable to clear both lights with their diagnostic gear.

A little searching on here shows that others have experienced the same problem too, but I'm not sure whether it was a freebie fix by the dealer to have updated software loaded or whether the dealers made a charge.

To my (perhaps naive) way of thinking, if there's a known problem with a piece of software, then it should be fixed f.o.c.

Could somebody with this fault say what their experience was when approaching the dealer?

Many thanks,
Mark.

Just to update on this.

Took the car to Seat dealer ( Castlegate, Norwich). They rang back the next day saying we needed a new ecu and it would cost up to £1000!!!!!

I told them about the software issue, which they promptly denied ever hearing about, but they said they would look into it and report back.

5 days later we get a call saying it's been done with a software update. (£90 charge though)

Just goes to show that a little research of other's experiences can save a bucketfull of cash.

Thanks for reply.