Intermittent loss of power
Hi, I have the 136ps 2011 i40 estate. I had an intermittent issue with power loss (limp mode) and an engine management light. I used a diagnostic which showed an issue with the EGR valve. I removed and cleaned the carbon from EGR valve, which wasn't particularly dirty and replaced. The issue went away then returned a few days later. It has been intermittent since, to the point of driving for a couple of weeks, then it returns for a couple of days. It has now returned with the engine management light again. Is this more likely to be a sensor issue (i.e wiring harness change) or a faulty EGR valve? The reason i'm thinking it may be electrical is due to the intermittent nature and the EGR valve looking in ok condition when removed. Thanks in advance.