Extra Quality ((free)) - Land Rover B109c15

: Replacing original lamps with aftermarket LEDs can sometimes trigger this code if the module detects an unexpected resistance or a short.

The B109C15 “Extra Quality” fault code is intimidating, but it is entirely solvable. By understanding that it signals a short or open circuit in your heated windshield or blower motor system, you can move beyond guesswork. land rover b109c15 extra quality

Temporary software glitches in the Door Module (DDM or PDM). Troubleshooting and Fixes The "Reboot" Trick: : Replacing original lamps with aftermarket LEDs can

: If the issue persists, the fault may be a physical open circuit or a short to the battery power. This requires checking the wiring harness for pinched or corroded wires, particularly where they pass through the door hinge bellows. Temporary software glitches in the Door Module (DDM or PDM)

Perform this simple test:

: Confirm what the part is (e.g., bracket, trim piece, mechanical component) and its application (which model of Land Rover, year).