I had these saved in ECU, but no engine light, any warnings nor noticeable problems with the car.

 

If deleted they come back.

 

The car is Seat Ibiza 1.2 TSI 2011 Ecomotive.

 

Any idea on what this can be? Thanks.

 

[IMG]https://i.imgur.com/sYcSw6O.jpg[/IMG]

DTC 3429+0447

7 hours ago, maya77 said:

Any idea on what this can be? Thanks.

Some idea, based on software engineering more than car mechanics.

 

3429 - Actual fault not stated, due to other fault with higher priority being present.

 

0447 - This appears to be an overvoltage related error. Confirm this by reading the voltage across the battery terminals on the 0 to 20V scale on a multimeter. You're looking for a value in the range 12V-14.4V for correct operation. If the voltage is above this, I'd suspect an actual fault with the alternator control box. If you're unsure about this, I think an automotive elecctrician will confirm, and be able to do the replacement work required.

Hi @KenONeill

 

I've checked voltage as you suggested.

 

This morning, when the engine off it was 12,3V.

 

After starting the engine it was 14,7V and stable.

 

So I guess it's everything allright.

 

I'll just forget it for now as there is no check engine light nor any noticeable problem with the car.

 

Thanks.

Just scanned my Ibiza's ECU for errors, no DTCs found. Mentioned errors are gone for now, not coming back after last deletion. I hope it will stay like that.