Yes indeed. I have seen the references to code 38 incorrectly as an 02 sensor fault (P0038) as it's not a petrol as per that linked post. So I am still assuming the code is due to the removed exhaust valve solenoid. What I'm struggling with is that the ECU is from a van that did not have a winter ...

Good Evening.

I was a member here many years ago, and have lost/forgotten those login details, so just signed up again.

Is there anyone that can point me towards the reason for an engine ECU fault code 38? My searches have not found the code referenced.

My van is a 1997 diesel 4wd AFT. Originally ...