Diagnosis
This headache of a problem is simply one of those things where if you don’t already know then you will probably never find out until it’s the last thing you try. So lets say you’ve replaced the blown halogen bulb, you’ve cleared the OBD (on-board diagnostics) error code with an OBDII tool and you’ve even swapped the bulbs over, yet that pesky blown bulb icon is still on the dashboard?