B2692

Code

LAND ROVER B — Body

Passenger seat belt buckle switch - failure in circuit

Brand: LAND ROVER

Type: B — Body

Views: UK: 11 EN: 12 RU: 11

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Page language: EN

Causes

Open or shorted wiring in passenger seat belt buckle circuit
Corroded, loose, or damaged connector at buckle or module
Failed/passenger seat belt buckle switch
Water ingress or contamination in buckle assembly
Faulty body control/airbag/occupant classification module or poor ground
Intermittent wiring damage from seat movement or seat track

Symptoms

Seat belt warning light illuminated or flashing
Continuous seat belt reminder chime even when buckle is fastened
Passenger airbag/occupant detection warnings or faults
Incorrect passenger occupancy status on dash or SRS scan tool
DTC stored in vehicle diagnostic memory (B2692)

What to check

Read DTC with a diagnostic scanner; record freeze frame and related codes
Visual inspection of passenger seat buckle, wiring harness under seat, and connectors for damage, corrosion or water
Operate buckle while watching live data for buckle switch state change
Wiggle harness and buckle while watching live data to find intermittent faults
Measure continuity and resistance of buckle switch circuit with harness disconnected
Inspect seat track area for chafed wires and replace/secure as required

Signal parameters

Buckle switch is a simple open/closed switch; expected state changes when buckle is fastened/unfastened
Typical signal: switched to ground or pulled to reference voltage by module (common systems use a 5 V pull-up or a direct ground switch). Verify with manufacturer data
Expected continuity: closed (near 0 Ω) when buckle latched, open (OL) when unlatched — confirm with service manual
No or very low current draw when idle; intermittent voltage changes indicate wiring/connector issue

Diagnostic algorithm

Retrieve and record DTC(s) and freeze-frame with a diagnostic scanner. Note any related airbag/occupant codes.
Visually inspect passenger buckle, harness, and connectors for obvious damage, corrosion or water ingress. Check under trim and seat base.
With ignition ON (engine off), monitor buckle switch input using an appropriate scan tool or multimeter. Observe state while buckling/unbuckling.
Perform wiggle test: move the seat through full travel and wiggle harness/connectors while monitoring the signal for intermittent changes.
If no signal change, disconnect buckle connector and measure continuity/resistance across the switch while actuating the buckle. Replace buckle if switch does not change state.
If switch is good, back-probe wiring at the module connector and verify correct reference voltage and continuity to the buckle connector. Repair any opens, shorts or poor grounds.
Repair or replace damaged wiring, connectors, or the buckle assembly. Use dielectric grease on moisture-prone connectors after repair.
Clear codes and retest. Verify that the buckle switch state is reported correctly and no related SRS/occupant faults remain.
If wiring and buckle check OK but fault persists, consult manufacturer wiring diagrams and consider module diagnosis or replacement per service procedures.

Likely causes

Damaged or disconnected connector at the buckle (most common)
Broken or chafed wire under the seat from track movement
Failed buckle switch due to contamination or internal break
Corrosion on module connector or poor ground
Less likely: control module fault

Fault status

⚠️ Status

Passenger seat belt buckle switch — failure in circuit. Module detects invalid or missing buckle switch signal (B2692).

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

Repair manuals

Manual library for LAND ROVER

160

Browse 160 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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B2692 — Passenger seat belt buckle switch - failure in circuit