B1665

Code

LAND ROVER B — Body

seat engine advance / retreat stuck

Brand: LAND ROVER

Type: B — Body

Views: UK: 16 EN: 26 RU: 12

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Page language: EN

Causes

Obstruction in seat track (debris, foreign object)
Seized or damaged seat motor or gearbox
Faulty seat position sensor or encoder
Defective seat switch or control stalk
Open/short in wiring harness, corroded connector, or poor ground
Blown fuse or tripped circuit protection

Symptoms

Seat will not move forward or rearward when commanded
Partial movement or very slow travel
Audible motor noise but no movement
Intermittent operation or movement stops at a certain point
Instrument cluster/IPC message or service lamp related to seat fault

What to check

Use manufacturer scan tool to read all seat-related codes and live data; record freeze frame and history
Visually inspect seat tracks and under-seat area for obstructions, damaged components, or foreign objects
Operate seat controls while observing/ listening for motor activity and noting any unusual noises
Inspect fuses and circuit breakers related to the seat power circuit
Visually inspect connectors and wiring for corrosion, damage, pin push-out, or water ingress
Check for diagnostic trouble codes from the seat control module and related modules (SRS caution when removing seat)

Signal parameters

Battery supply present at motor connector when seat movement commanded (battery voltage ~12 V)
Ground continuity at motor chassis ground point
Position sensor provides a changing analog voltage or digital position message as seat moves (varies by manufacturer)
Control module may send a PWM or switched supply to motor when commanded — voltage should change with command
Motor current increases under load; unusually high or zero current can indicate motor stall or open circuit

Diagnostic algorithm

Safely park vehicle, apply parking brake, and preferably disconnect battery when removing seat (observe SRS/airbag precautions per manufacturer)
Connect scan tool, read and record B1665 and any related codes; clear codes and attempt to re-create fault with live data active
Check for mechanical obstructions: move seat manually if possible and remove any debris in tracks
With a helper, command seat forward/rear while another inspects under seat for motor activity and checks connectors for voltage/ground (use proper fused test light or DVOM)
If no power to motor when commanded, check fuses, circuit protection, relays, and wiring back to seat control module for open/short
If power present but motor does not run, disconnect motor and bench-test motor with fused 12 V supply to confirm operation; replace motor/gearbox if it fails
If motor runs but position sensor does not report movement, test/replace the position sensor or encoder and verify wiring to seat control module
Inspect and test seat switch assembly; replace if switch input not being recognized by the control module
If wiring and actuators check good, consider seat control module fault — verify module voltages, grounds, communications and reflash or replace per workshop procedures
After repairs, recalibrate/relearn seat position and run full function checks; clear codes and confirm no reoccurrence

Likely causes

Mechanical obstruction in seat tracks
Failed/overloaded seat motor or gearbox
Damaged wiring/connector to seat motor
Faulty seat control switch or position sensor

Fault status

⚠️ Status

Seat advance/retreat movement is obstructed or not detected by the seat control module; module set a stuck/movement fault.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0 - 2.5 hours

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Repair manuals

Manual library for LAND ROVER

337

Browse 337 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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