B2304

Code

LAND ROVER B — Body

Seat movement, headrest out of the high range

Brand: LAND ROVER

Type: B — Body

Views: UK: 14 EN: 19 RU: 19

AI status

Completed

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Page language: EN

Causes

Mechanical obstruction or binding in the headrest/track
Damaged or worn headrest actuator/motor or gearbox
Faulty headrest position sensor (potentiometer/encoder) or limit switch
Open, shorted or corroded wiring / poor connector contact to motor or sensor
Faulty seat control module or internal software/calibration error
Incorrect or incomplete seat calibration / learned position

Symptoms

Headrest will not move to or from the highest position
Seat warning message or fault indicator related to seat adjustment
Intermittent or complete loss of headrest adjustment function
Unusual noise from seat (grinding, clicking) when attempting to move headrest
Seat memory or automatic adjustment features may not work correctly

What to check

Retrieve stored DTCs and freeze-frame/fault occurrence data with a compatible scan tool.
Attempt to move the headrest through full travel and observe behavior; listen for motor noise or binding.
Visually inspect headrest mechanism and seat tracks for foreign objects, broken parts or deformation.
Inspect connectors at the seat control module, actuator and sensors for corrosion, bent pins or loose terminals.
Check for related seat/module codes and SRS warnings (follow SRS-safe procedures before working on seat wiring).
Inspect wiring along the seat harness for chafing where it passes under the seat or through trim panels.

Signal parameters

Headrest position sensor: smooth varying signal across travel (typically 0.5–4.5 V for potentiometer types) — should change continuously as headrest moves
End-of-travel/limit switch: defined open/closed state when headrest at high/low limits
Actuator supply voltage: ~12 V when movement commanded (battery voltage level), no supply when idle
Motor current: normal running current low; stalled motor may show high current or rapid fuse/trip
Module communication: seat control module should respond on vehicle network (CAN) and report position values

Diagnostic algorithm

Read and record all stored codes and freeze-frame data with an OEM-capable scan tool. Note any additional seat or SRS codes.
With the scan tool, monitor live headrest position sensor output while commanding the headrest up and down. Confirm if the sensor follows the command or is static/erratic.
Visually inspect headrest assembly and seat trim for obstructions or damaged components. Free any visible blockage and re-test.
Inspect electrical connectors at the seat control module, headrest actuator and sensor. Re-seat connectors and check for corrosion or bent pins.
With ignition on, verify supply voltage and ground at the actuator/sensor connector while commanding movement. Compare to battery voltage.
If voltage/ground is present but sensor output does not change or is out of expected range, test sensor continuity/resistance per manufacturer procedure or replace sensor.
If sensor responds but module still flags out-of-range, perform full seat calibration/relearn procedure per manufacturer guidance then retest.
If actuator does not run and has correct supply, consider bench-testing or replacing the actuator/motor (follow safety and airbag/seat removal procedures).
Repair any damaged wiring or connectors and clear codes. Reproduce the issue and verify the code does not return after repairs and calibration.
If faults persist after mechanical and wiring checks, consider replacing or reprogramming the seat control module per factory procedure.

Likely causes

Headrest travel physically blocked (clothing, debris, internal bent bracket)
Position sensor failed or produced implausible voltage/pulse readings
Wiring damage at seat harness (pinched under seat or through trim)
Actuator seized or gearbox stripped causing motor to stall and sensor mismatch
Seat module needs recalibration or has intermittent fault

Fault status

⚠️ Status

B2304 — Seat movement fault: headrest position sensor indicates headrest is out of the permitted high range. Stored when the seat control module detects a headrest position beyond defined limits or a mismatch between commanded movement and sensor feedback.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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