B1B92

Code

LAND ROVER B — Body

motor recline seat relay seat

Brand: LAND ROVER

Type: B — Body

Views: UK: 13 EN: 24 RU: 19

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Page language: EN

Causes

Failed or sticking seat recline relay
Open, shorted or corroded wiring in relay control or power circuit
Poor connector pin contact at relay, fuse, seat module, or motor
Blown fuse or poor battery/ignition power supply to the seat circuit
Faulty seat control module (BCM/seat ECU) or software issue
Faulty recline motor (overloaded or seized) causing relay to trip

Symptoms

Seat back will not recline or return
Intermittent or inconsistent recline function
Seat adjustment operates only in one direction or stops mid-travel
Stored seat memory fail or seat fault lamp/message displayed
Clicking noise from relay/fusebox when attempting recline

What to check

Read stored DTCs and freeze frame data with a dealer-level or capable scanner; note any related seat or body module codes
Visually inspect seat wiring, connectors, fusebox and relay for damage or corrosion
Check relevant fuses for continuity and correct rating
Listen for relay click when operating recline switch; verify relay engages
Measure battery voltage at fuse/relay supply and verify good ground at seat module
Perform wiggle test of seat harness while operating recline to reveal intermittent faults

Signal parameters

Expected battery supply: ~12 V at relay power terminal with ignition on
Relay coil control: ~0 V/12 V (or switched ground) when recline command is given
Relay output: 12 V present at motor power terminal when relay energizes
Recline motor DC resistance: typical low-ohm value (varies by model) — compare to spec
Motor current draw: low to moderate (compare to manufacturer spec); very high current indicates seized or worn motor
CAN/vehicle bus messages: seat module should receive/acknowledge recline command (verify with scan tool)

Diagnostic algorithm

Retrieve and record all DTCs and freeze frame data. Verify if code is current or historic and note any related codes.
Visually inspect relay, fusebox, seat connectors and harness for damage, overheating or corrosion. Repair as needed.
Check fuses for continuity and correct voltage at fuse with ignition on. Replace blown fuses and recheck.
Operate recline switch while monitoring for relay click. If relay does not click, test relay coil control at coil terminals with a multimeter or scan-tool command.
With ignition on, measure voltage at the relay power input and at the relay output when commanding recline. If input present but output absent, bench-test or replace relay.
If relay outputs 12 V but motor does not run, check motor resistance and apply fused 12 V directly to motor to confirm operation. Measure motor current draw — excessive draw indicates motor/mechanism fault.
If motor runs when directly powered, inspect wiring between relay and motor and the seat control module outputs. Repair wiring or connectors as needed.
Verify seat module power and ground. If control signals to relay are missing despite good switch input, suspect seat control module fault or CAN communication issue.
After repairs, clear DTCs and perform full function test of seat recline. Re-scan to confirm code does not return; road/test as required.

Likely causes

Relief or failure of the seat recline relay
Loss of 12 V feed or ground to the relay or seat module
High current draw from a failing recline motor causing relay failure
Damaged wiring harness at seat (common at seat entry points)
Corroded connector at relay/fusebox or seat module

Fault status

⚠️ Status

Seat recline motor relay circuit fault detected — relay or circuit not operating within expected parameters.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5 - 2.0 hours

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