Anyone with P1174 fault experience?

[SpdyHS]

I changed the oil filter, oil and fuel filter a couple of weeks ago. This afternoon the yellow engine light came on, with the P1174 "Fuel Trim Cylinder Balance Bank 1" code.

Anyone who has experienced this before?

 

[KekseKaempfer]

This is a fairly good explanation of fuelling and how it's controlled:

Fuel Trim Info - Ross-Tech Wiki

wiki.ross-tech.com

Unfortunately it could be many things. I'd look for air leaks in the system to start with, that's always a good starting point.

 

[SpdyHS]

Is it possible that I fitted the new fuel filter poorly, and therefor I get the fault code?

 

[SpdyHS]

It's fixed! I replaced all of the spark plugs and the yellow light is no more.

So for future reference, P1174 might be caused by old spark plugs.