Discovery 4 Smoke Test solves Restricted Performance DTC mystery.

In this video, I share the journey of tracking down the elusive fault behind my Land Rover’s "Restricted Performance" trouble code. After weeks of troubleshooting, I finally uncovered the issue, and it turned out to be something a smoke test could’ve revealed much sooner! If you're facing this fault, start by checking for obvious leaks. If that doesn’t solve it, don’t waste time like I did—get a smoke test done ASAP. My issue only appeared during cold mornings or while towing uphill, making it especially tricky to diagnose. #troublecode #SmokeTest #lr4 #discovery4 #lr3