After any repair, clear the code using a JLR-compatible scanner (not just a generic OBD-II reader). Drive the vehicle with the AC on auto. Enter a tunnel or spray a puff of exhaust near the fresh air intake – the recirculation door should close automatically. If the code returns, the HVAC module may be faulty.
In Land Rovers (e.g., Range Rover, Discovery, Evoque, Velar), B1D9F-11 is frequently associated with:
The Land Rover B1D9F-11 appears to be a specific part/assembly code rather than a vehicle model. Assuming it’s a Land Rover OEM part number (common format for Land Rover/Jaguar parts), this review examines likely identity, typical applications, fitment considerations, performance expectations, and practical ownership/installation tips. land rover b1d9f-11
A: As of 2025, there is no official recall. However, JLR has issued a technical service bulletin (TSB) regarding water ingress into the sensor. Ask your dealer about TSB #Q404 or #HVAC-004.
The code B1D9F-11 often points to the module’s inability to receive the signal from the key. After any repair, clear the code using a
Visual Inspection:
You may not notice any driving performance issues, but the symptoms are directly tied to comfort and climate control. Common signs include: Visual Inspection:
In rare cases, the code remains stored without any noticeable symptoms, but it will prevent your vehicle from passing an emissions or comprehensive OBD-II readiness test in some regions.