B11F0

Code

LAND ROVER B — Body

Air intake damper position sensor

Brand: LAND ROVER

Type: B — Body

Views: UK: 15 EN: 36 RU: 20

AI status

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Page language: EN

Causes

Faulty air intake/recirculation damper position sensor
Damper actuator mechanical binding, damage, or obstruction
Wiring fault (open, short to voltage/ground, damaged insulation)
Poor connector pins or corrosion at sensor/actuator connectors
Faulty HVAC/engine control module or software/calibration error
Failed actuator (motor) that drives the damper

Symptoms

HVAC vent mode not switching between fresh/recirculation or dash/foot/defrost correctly
Unusual HVAC air distribution behavior or stuck in one mode
Reduced cabin comfort or persistent recirculation/odour issues
Malfunction indicator or HVAC warning message on dash (manufacturer-specific)
Stored DTC and possible inability to perform HVAC self-calibration

What to check

Use a scan tool to read freeze frame and live data for the damper position sensor and actuator commands
Visually inspect sensor and actuator connectors for corrosion, bent pins, or looseness
Manually operate damper (if accessible) to check for binding or obstruction
Measure sensor supply voltage and ground at the connector with ignition on
Back-probe sensor signal wire and confirm expected voltage change during damper movement
Check wiring continuity between sensor and control module; look for chafing or repairs

Signal parameters

Typical sensor type: analog position sensor (potentiometer) or hall-effect position sensor
Supply/reference voltage: ~5 V (vehicle-specific) to sensor
Signal output: approx. 0.5–4.5 V proportional to damper travel (closed to open) — confirm with manufacturer data
Ground: solid reference ground required; poor ground will cause erroneous readings
If PWM/hall type used: variable duty cycle or digital signal; check with manufacturer wiring diagram

Diagnostic algorithm

Connect an OEM-level scan tool. Clear the code, cycle ignition, and attempt a damper/recirculation command while monitoring live sensor value and actuator command.
If the code returns, observe live data while commanding the damper. If commanded but sensor value doesn't change or is erratic, suspect sensor/actuator or mechanical bind.
Visually inspect connectors at sensor and actuator for corrosion, water ingress, or pin damage. Repair or replace as needed.
With ignition on, measure sensor supply voltage and ground at the sensor connector. Confirm the sensor receives proper reference voltage (~5 V) and ground.
Back-probe the sensor signal wire and move the damper (manually or via actuator command). Verify signal voltage changes smoothly across expected range. Look for jumps, dropouts, or stuck values.
Check continuity between sensor signal/ground wires and the control module to rule out open or short circuits. Repair wiring faults.
Inspect and operate the damper assembly by hand to detect binding or obstructions. Repair or replace damaged linkages or dampers.
If wiring and mechanical parts are good but sensor output is out of spec or inconsistent, replace the damper position sensor (and consider replacing the actuator if integrated).
After repair or replacement, perform required HVAC/actuator calibration or relearn with a scan tool, then clear codes and verify proper operation over multiple cycles.
If problems persist and wiring/sensor/actuator check out, consider testing or reprogramming the controlling module per factory procedures or consult dealer technical service information.

Likely causes

Sensor failure or degraded internal potentiometer
Damper linkage seized or obstructed preventing expected travel
Broken or disconnected signal/ground wire between sensor and module
Corroded connector causing intermittent/incorrect voltage
Actuator not moving while sensor indicates fixed/erratic position

Fault status

⚠️ Status

Air intake/recirculation damper position sensor fault detected — sensor signal out of range or implausible.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2 hours

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