2018 fabia estate 1 ltr 3 cylinder. EPC warning light just came on. Doeas anyone have any idea of what the most common cause is. Online info is that there can be several causes. Ta

Hello, welcome to the forum.

Does your vehicle go into limp mode when the EPC lights up? Are there any other fault lights?

You will need to get the vehicle scanned for any faults (DTCs) recorded. There is no point in trying to guess what might be causing the warning light to appear.

Many thanks. Yes it won't rev about 3800 and I'm pretty sure the turbo doesn't come in. No other lights. Car booked in to local garage for scan. Hopefully it will prove to be one of the less expensive options from the long list of possible faults.

Get read for fault codes as above.

Very common for the EPC or the Engine light is a Misfire.

When were the spark plugs changed and at how many miles and how many is it at now?

SWMBOs Fabia (CHZC) had a similar issue with the MIL and EPC warnings, with turbo actuator fault code logged - fixed with a replacement actuator arm kit.

The DTC I read on my own OBD device was P003A, the garage device read P334B00 code.

Edited 14 November, 202514 Nov by Warrior193
added information

1 hour ago, Blacksmith1 said:

Many thanks. Yes it won't rev about 3800 and I'm pretty sure the turbo doesn't come in. No other lights. Car booked in to local garage for scan. Hopefully it will prove to be one of the less expensive options from the long list of possible faults.

Is that rev limit while driving in gear?

There is a rev-limiter that operates while vehicle is in neutral.

Hi All, my local garage confirmed "limp mode" and turbo actuator rod nor moving. He has cleaned the actuator and all is good. Thanks all for your response to my query.