Good evening

I have a 2019 Skoda Superb.

The exhaust warning light came on a week or so ago. I ran my OBD Eleven and I can clear the warning light. However it does keep coming on. Having had a similar issue with my previous Superb my partner suggested driving it at high revs for 15/20 minutes which we did.

I cleared the light, but the next time I went out in the car it was back on.

Any suggestions or advice will be gratefully received.

Best give some clues like WHAT ENGINE, how many miles done, when was it serviced last. Could there have been some issue with the last fuelling of the var?

It's a 2l 150hp engine that's done 118591 miles.

Oil change done at 118488.

Last full service 12/09/2025 at 112689.

Last fuel fill up on 21/09.

Light came on either 27/09 or 28/09.

I ran the OBD Eleven on 28/09.

Diesel

What’s the error on OBD11?

Driving at high revs heats up the exhaust and helps cause a passive regen (burning off the soot) but if that’s not the key issue then it’s not the solution to the problem.

You could have a sensor breaking down which is sometimes causing an implausible signal - driving at high revs does nothing for that.

Thanks for your response.

Well that's the thing it doesn't come up with an error code. On the scan page it shows the same symbol with CHECK, but it doesn't show anywhere that I can see as an error code.

I will run it again tomorrow and see if there is anything that I've missed.

I ran the OBD11 again this morning.

It shows the exhaust as a passive fault with no error code - photo attached.

I emailed the results to myself before clearing the codes. Nothing on them for the exhaust, they mostly relate to the doors!

Any ideas??

Doesn’t give much to go on.

Although the yellow battery indicator on the right; is OBD11 saying battery is one of the error codes? A battery on its way out is famous for all the most random errors - can you get a decent tester on it? How old is it?

No error code for the battery.

I have no idea how old it is (I've had the car for 3 years) but I know that if I put it on charge it charges up quickly. Maybe I'll put it on charge tomorrow.

I should say that my car gets used for lots of short trips, nearly every day down the road for about a mile and back up again.

I need to use my other car more see photo ........but only in good weather! Or walk down and up.

I'd suggest getting the battery properly tested first.

There is probably a date code stamp on the top surface of the battery neg. terminal, code format is WW/YY.

If the MIL (check engine) indicator is lit, there should be a DTC logged - perhaps your OBD reader is incapable of reading it.

What charger have you been using?

Edited 1 hour ago1 hr by Warrior193
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