Code
B2306
LAND ROVER
B — Body
Headrest support motor of the seat stuck
Views:
UK: 5
EN: 9
RU: 6
AI status
Completed
Completed
100%
Causes
- Mechanical obstruction or seized linkage in the headrest mechanism
- Worn or failed headrest support motor or internal gearbox
- Blown fuse or faulty relay supplying the motor
- Poor power supply or bad ground at the motor connector
- Damaged wiring or corroded/loose connector
- Faulty seat control module or software error
Symptoms
- Headrest will not extend/retract or stops part way
- No movement when headrest control is operated
- Audible grinding, clicking or high-load noise from the headrest assembly
- Diagnostic trouble code B2306 stored in seat/BCM module
- Other seat position/memory faults or limited seat functionality
What to check
- Scan vehicle with a diagnostic tool; read and record all stored seat/body codes
- Attempt to operate headrest while monitoring motor voltage and current
- Visually inspect headrest area for obstructions or foreign objects
- Check relevant fuses and relays for continuity and proper operation
- Inspect wiring harness and connector for corrosion, damage, or loose pins
- Listen for motor noise; feel for movement while a second person operates the control
Signal parameters
- Supply voltage at motor connector: approx. 11–14 V when operating (verify to manufacturer spec)
- Motor winding resistance (typical range): low ohms (often 1–10 Ω) — compare to spec
- Motor current draw: should be within manufacturer limits; abnormally high current indicates stall or mechanical binding
- Control module command signal: switched 12 V or PWM output (varies by model) — verify presence when operating
- Position sensor/feedback (if equipped): 0–5 V analog or CAN/serial position message — verify change during operation
Diagnostic algorithm
- Safety: Park vehicle, ignition off. If working near seat airbags or pretensioners, follow manufacturer safety procedures (battery disconnect if required).
- Scan: Use a compatible scan tool to read stored codes, freeze frame data and attempt an actuator test for the headrest motor if supported.
- Visual & mechanical inspection: Check headrest for visible obstructions, damaged trim, or bent guides. Manually check for free movement (do not force trim or wiring).
- Electrical supply: With ignition/accessory on, measure voltage at the motor connector while an assistant operates the headrest control. Verify good battery voltage and solid ground.
- Current draw test: Measure motor current during operation. Excessive current indicates mechanical binding or a seized motor; no current suggests open circuit or control fault.
- Connector & wiring: Inspect and wiggle-test connectors and harness for intermittent faults. Check continuity to the seat control module and to ground/fuse.
- Fuse/relay: Check continuity and operation of relevant fuses and relays in the seat/BCM circuit.
- Motor bench test: If wiring and supply are good, remove motor/actuator and bench-test directly with controlled 12 V to confirm mechanical operation and current profile.
- Module/software: If motor and wiring are good, investigate seat control module outputs, update software/calibrate as per manufacturer procedures, and replace module if output drivers are defective.
- Repair & verify: Repair or replace the faulty component(s), clear codes, and verify full operation through several cycles and re-scan for new codes.
Likely causes
- Mechanical binding (debris, foreign object, bent linkage)
- Motor or gear wear causing the motor to stall
- Intermittent power/ground due to connector corrosion or broken wire
- Fuse or relay failure
- Seat module output driver fault
Fault status
Status
Stored fault: headrest support motor stuck. Possible mechanical obstruction, motor stall, wiring, fuse/relay, or seat control module issue. Inspect and test motor, power, ground and seat module.
Repair difficulty: Medium
Diagnostic time: 1.0-2.0 hours
Similar codes
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Code
B2306
Other
B — Body
Seat Headrest Motor Stalled
Views:
UK: 17
EN: 28
RU: 18
AI status
Completed
Completed
100%
Causes
- Mechanical obstruction or seized linkage in the headrest mechanism
- Worn or failed headrest support motor or internal gearbox
- Blown fuse or faulty relay supplying the motor
- Poor power supply or bad ground at the motor connector
- Damaged wiring or corroded/loose connector
- Faulty seat control module or software error
Symptoms
- Headrest will not extend/retract or stops part way
- No movement when headrest control is operated
- Audible grinding, clicking or high-load noise from the headrest assembly
- Diagnostic trouble code B2306 stored in seat/BCM module
- Other seat position/memory faults or limited seat functionality
What to check
- Scan vehicle with a diagnostic tool; read and record all stored seat/body codes
- Attempt to operate headrest while monitoring motor voltage and current
- Visually inspect headrest area for obstructions or foreign objects
- Check relevant fuses and relays for continuity and proper operation
- Inspect wiring harness and connector for corrosion, damage, or loose pins
- Listen for motor noise; feel for movement while a second person operates the control
Signal parameters
- Supply voltage at motor connector: approx. 11–14 V when operating (verify to manufacturer spec)
- Motor winding resistance (typical range): low ohms (often 1–10 Ω) — compare to spec
- Motor current draw: should be within manufacturer limits; abnormally high current indicates stall or mechanical binding
- Control module command signal: switched 12 V or PWM output (varies by model) — verify presence when operating
- Position sensor/feedback (if equipped): 0–5 V analog or CAN/serial position message — verify change during operation
Diagnostic algorithm
- Safety: Park vehicle, ignition off. If working near seat airbags or pretensioners, follow manufacturer safety procedures (battery disconnect if required).
- Scan: Use a compatible scan tool to read stored codes, freeze frame data and attempt an actuator test for the headrest motor if supported.
- Visual & mechanical inspection: Check headrest for visible obstructions, damaged trim, or bent guides. Manually check for free movement (do not force trim or wiring).
- Electrical supply: With ignition/accessory on, measure voltage at the motor connector while an assistant operates the headrest control. Verify good battery voltage and solid ground.
- Current draw test: Measure motor current during operation. Excessive current indicates mechanical binding or a seized motor; no current suggests open circuit or control fault.
- Connector & wiring: Inspect and wiggle-test connectors and harness for intermittent faults. Check continuity to the seat control module and to ground/fuse.
- Fuse/relay: Check continuity and operation of relevant fuses and relays in the seat/BCM circuit.
- Motor bench test: If wiring and supply are good, remove motor/actuator and bench-test directly with controlled 12 V to confirm mechanical operation and current profile.
- Module/software: If motor and wiring are good, investigate seat control module outputs, update software/calibrate as per manufacturer procedures, and replace module if output drivers are defective.
- Repair & verify: Repair or replace the faulty component(s), clear codes, and verify full operation through several cycles and re-scan for new codes.
Likely causes
- Mechanical binding (debris, foreign object, bent linkage)
- Motor or gear wear causing the motor to stall
- Intermittent power/ground due to connector corrosion or broken wire
- Fuse or relay failure
- Seat module output driver fault
Fault status
Status
Stored fault: headrest support motor stuck. Possible mechanical obstruction, motor stall, wiring, fuse/relay, or seat control module issue. Inspect and test motor, power, ground and seat module.
Repair difficulty: Medium
Diagnostic time: 1.0-2.0 hours
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