I have a 2016 T450 that has an error (fault) code of E001485-07 which the service manus says is "ECU main relay fault". I replaced a relay in the fuse box located on the left sidewall (next to the engine), but I am still getting this code. It seems to go away once the engine is warm... and comes back once cooled. I had originally had several error codes and the engine was hard to start and then would only go up to 1500 rpms. I found an ECU relay was blown and replaced it. T450 runs fine now, but I still get this one error code (and the three beeps) before starting it. Also, does anyone know if the error codes can be cleared on the T450? I has the basic display screen on the upper left side of the cab. Any ideas? Thanks!