B2369

Code

LAND ROVER B — Body

Short bell tower exit request circuit to the ground Disconnection of the power from the left seat heater Invalid temperature adjustment point of the left seat heater

Brand: LAND ROVER

Type: B — Body

Views: UK: 10 EN: 16 RU: 12

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Page language: EN

Causes

Short to ground on the left seat heater control or request circuit
Open or disconnected power feed to left seat heater (fuse, relay, harness)
Faulty left seat heater element (open/short)
Faulty seat temperature sensor/thermistor or its connector
Faulty seat heater switch or seat module/control unit
Corroded/damaged connector or pin (water ingress or mechanical damage)

Symptoms

Left seat heater not working or intermittent operation
Heater indicator lamp (dash or switch) flashes or does not illuminate
Stored B2369 (left seat heater circuit fault) in diagnostic trouble codes
Erratic or impossible seat temperature readings on scan tool
Possible burning smell or visible damage near seat wiring (rare)

What to check

Scan vehicle modules and read live data for left seat heater status and temperature sensor values
Verify relevant fuses and relays for seat heaters are present and intact
Visually inspect wiring and connectors under the left seat for damage, corrosion, or water
Check for continuity and resistance of the heater element and temperature sensor with seat removed if needed
Perform wiggle test on harness/connectors while observing live data for changes
Measure supply voltage to seat heater control connector with heater switch ON

Signal parameters

Supply voltage to heater fuse/connector: approx. 11–14 V with ignition ON and heater request active
Expected heater element resistance (typical range): ~0.5–15 Ω depending on design — open circuit or very low near 0 Ω indicates open or direct short respectively
Seat temperature sensor typical range: several kΩ (NTC) that changes with temperature — consult vehicle-specific values; open/OL or near 0 Ω indicates fault
Control signal type: many systems use a switched 12 V feed and PWM grounding from seat module; PWM frequency is commonly low (1–20 Hz) — confirm with OEM data when required

Diagnostic algorithm

Retrieve freeze frame and full DTC list from all modules; record live data for left seat heater and temperature sensor.
Inspect fuses and relays related to seat heating; replace any blown fuses only after determining reason.
With battery connected, turn ignition to ON and operate left seat heater. Measure supply voltage at the seat heater power feed and at the control/ground pin on the seat module connector.
Disconnect the seat connector and measure resistance of the heater element between its supply and return terminals. Compare to expected range. Check temperature sensor resistance against expected values or published chart.
Check for continuity to chassis/ground from heater element wiring to detect an unintended short. Check for short to ground on the control/request circuit using an ohmmeter or controlled fused power source.
Perform a wiggle/strain test on wiring while observing live data — watch for intermittent faults indicating broken conductors.
Inspect and clean connectors; repair any damaged pins or wires. Repair harness with proper splices or replace affected wiring loom sections if damaged.
If wiring and elements are good, bench-test or substitute the seat control/module/switch (if available) per OEM procedure; replace module only if supported by test results.
After repair, clear codes and verify proper heater operation and stable temperature sensor readings during multiple cycles.
If fault persists and wiring and seat components check good, consult manufacturer wiring diagrams and consider replacement or reprogramming of the seat control module or BCM as a last resort.

Likely causes

Damaged wiring harness under the left seat (pinch, chafe, corrosion)
Heater element shorted to seat frame/chassis
Loose or corroded connector at seat heater module or switch
Blown fuse or failed relay supplying the left seat heater
Faulty temperature sensor in the left seat cushion/backrest

Fault status

⚠️ Status

Left seat heater circuit fault detected — possible short to ground, loss of power, or invalid temperature sensor reading. System may disable left seat heating until fault is resolved.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.5 hours

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