Hi john we have a qashqai in at the moment with code p1089"pump"that's the only description G-Scan gives you,we phoned auto vista and spoke to one of the techs very nice bloke who went on to nissans web site and downloaded nissans description of diagnostic fault tree which was a complete waste of time,he also wanted to know if G-Scan had the injector programme in the menus and no it doesn't,we have a test bench and test a lot injectors and have found out that most injectors will run rough at first but then settles down and run ok maybe around 50 to 100 miles,hope this helps terry