Land Rover B109c15 | Extra Quality

Air may remain trapped blowing only at the windshield (defrost) or only at the floorboards, refusing to change modes when buttons are pressed on the dash.

I plugged the logo unit in to the drivers side front door, no illumination ! Swapped back to the original lamp, no illumination! ( Making sense of fault codes? | LandyZone

After completing the physical repair, clear the DTCs and perform a hard reset of the affected module via your diagnostic tool to recalibrate its current-sensing thresholds. land rover b109c15 extra quality

for your specific Land Rover model.

: Short circuit to battery or open circuit (indicated by -15). Recommended Troubleshooting Steps Air may remain trapped blowing only at the

This sub-code indicates a "General Electrical Failure," specifically a circuit short to battery or an open circuit . Why "Extra Quality" Matters

If diagnosis confirms the battery was the cause. ( Making sense of fault codes

Corroded ConnectorsMoisture ingress near the A-pillar or the roof lining can cause green crust (oxidation) on the pins. This increases resistance or bridges pins, causing the BCM to register a fault.