vauxhall adam dtc delte

[callen8]

hi can any one help me please need dtc p0171 trim system lean removed ecu is ac delco e78 thanks in advance

[b44ly]

you have air leak, dtc delete will hide problem. fix issue, easy to check. disconnect pvc, plug the pipe, check lambda values to see if correct after.
https://www.youtube.com/watch?v=VBY15y1OKyk

[callen8]

will check thanks we have smoke tested intake no issues