had update done end of November.
2 weeks later emission light came on car in limp mode. never had this before.
took to local garage and told need new EGR valve.
had this done .
2 weeks later emission light on again , limp mode.
took it back in . they checked everything could find no fault and said all sensor readings are within normal parameters.
cannot be coincidence that this has happened after update. never had a problem in 2 years prior to this.
going to contact audi at Nottingham who did the upgrade and see what response I get.
reading comments on this and other sites it appears this could be a regular occurring problem.
