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Home / DTC / B2614 — Body Control Module (BCM) configuration/communication fault

B2614 — Body Control Module (BCM) configuration/communication fault

Detailed page for trouble code B2614.

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Code

B2614

LAND ROVER B — Body

Body Control Module (BCM) configuration/communication fault

Brand: LAND ROVER
Type: B — Body
Views: UK: 8 EN: 10 RU: 3
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Page language: EN

Causes

  • Incorrect or corrupt BCM software/firmware or configuration (coding) mismatch after replacement or update
  • Intermittent or lost CAN/LIN bus communication (open, short to ground/power, high resistance)
  • Low or unstable battery/charging system voltage during module programming or operation
  • Poor connector pins, corrosion, water ingress or damaged wiring harness to BCM
  • Blown fuse or poor ground affecting BCM power/supply
  • Failed BCM hardware

Symptoms

  • Warning lamps or messages related to Body/BCM functions
  • Intermittent or permanent loss of central locking, interior lights, wipers, or convenience features
  • Multiple communication-related DTCs present (U-codes or other B-codes)
  • Modules not visible or responding on diagnostic scan tool
  • Parasitic battery drain or unexpected module behavior

What to check

  • Connect a diagnostic scanner and read all stored and pending DTCs from BCM and gateway; note freeze-frame and history
  • Verify BCM appears on the vehicle network (module present and responding on scan tool)
  • Check battery voltage (engine off) and charging system; ensure stable 12–14.5 V during programming/diagnostics
  • Inspect BCM connectors and wiring for corrosion, bent pins, damage, or water intrusion
  • Check fuses and ground points for BCM power and I/O circuits
  • Scan bus traffic: confirm CAN/LIN network activity and look for bus-off or error frames

Signal parameters

  • Battery/ignition supply to BCM: ~11–14.5 V (verify stable during testing)
  • Ground continuity: low resistance to chassis ground
  • CAN bus recessive common-mode: ~2.5 V on CAN_H and CAN_L (recessive), dominant levels ~CAN_H ≈ 3.5 V and CAN_L ≈ 1.5 V
  • CAN bus differential activity: periodic traffic present when key or engine is on
  • Bus error counters or bus-off status reported by gateway/scan tool
  • LIN or other sub-bus signals used by BCM (verify expected voltages and activity per manufacturer data)

Diagnostic algorithm

  1. Retrieve all DTCs from BCM, gateway and related modules; record freeze-frame and related U-codes.
  2. Confirm battery state of charge and charging system; if low, charge battery and retest.
  3. Verify BCM presence on network with a capable scan tool. Note any 'not present' or 'no response' messages.
  4. Inspect BCM connectors, pins and harness for corrosion, damage or water ingress; repair as needed.
  5. Check BCM power and ground circuits (fuses, relays, ground points) for continuity and proper voltage.
  6. Monitor CAN/LIN traffic with a scan tool or oscilloscope. Look for bus errors, bus-off conditions, or missing nodes.
  7. If wiring and bus activity are good, confirm BCM coding and software level against manufacturer specifications or a known-good vehicle. Verify VIN and option coding.
  8. If coding is incorrect or software is out of date, reprogram/recode BCM per manufacturer procedures using a stable power source and correct subscription/credentials.
  9. Clear codes and retest vehicle operation. Monitor for recurrence and for any related U-codes that could indicate another module fault.
  10. If fault persists after wiring, power and correct coding, consider replacing the BCM with a unit that is correctly coded/programmed; follow manufacturer pairing procedures.
  11. Document repairs and verify all comfort, security and safety systems function as expected.

Likely causes

  • BCM was replaced or reprogrammed and not coded to vehicle VIN or option set
  • Intermittent CAN bus fault between BCM and gateway/instrument cluster
  • Battery was low or disconnected during a module reflash leaving configuration incomplete
  • Corroded connector or pin causing intermittent communications

Fault status

⚠️ Status
BCM configuration/communication fault — BCM reports missing or invalid configuration or failed communication with vehicle network. May require inspection of wiring, coding verification and/or reprogramming.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

Similar codes

B2610 B2613 U0100 U0140 U0155 U0073
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