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Home / DTC / B2619 — Body Control Module (BCM) configuration/memory fault

B2619 — Body Control Module (BCM) configuration/memory fault

Detailed page for trouble code B2619.

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Code

B2619

LAND ROVER B — Body

Body Control Module (BCM) configuration/memory fault

Brand: LAND ROVER
Type: B — Body
Views: UK: 5 EN: 7 RU: 6
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Page language: EN

Causes

  • Corrupted BCM configuration or coding data
  • Failed or degraded non-volatile memory (EEPROM/FLASH) inside BCM
  • Interrupted or failed module programming or software update (low battery or disconnect)
  • Poor power supply or ground to the BCM
  • Water ingress or physical damage to BCM or connectors
  • Faulty wiring harness or intermittent connector

Symptoms

  • Multiple body electrical features inoperative or intermittent (lights, locks, windows, wipers, HVAC controls)
  • Warning lamps or messages related to vehicle electrical system or module communication
  • Loss of immobilizer/key recognition or no-start conditions (if BCM handles security)
  • Modules showing 'no communication' for BCM on diagnostic scan
  • Erratic behavior of convenience functions after battery change or module replacement

What to check

  • Read full freeze frame and fault history from diagnostic tool (scan for other related DTCs)
  • Check battery voltage and health; confirm stable VBATT (12.4–12.8 V at rest, >13.5 V charging)
  • Inspect BCM power and ground circuits, fuses and fusible links for continuity and corrosion
  • Visually inspect BCM connector(s) for corrosion, bent pins, water intrusion or damage
  • Check CAN bus activity and termination; look for other U-codes or network errors
  • Confirm vehicle VIN, part number and software/calibration level of BCM

Signal parameters

  • Vehicle battery voltage (VBATT) during key on and cranking
  • BCM supply voltage and ground continuity
  • CAN High/Low differential voltages and bus activity (baud rate, error frames)
  • Number of memory/coding errors or EEPROM checksum value (if supported by tool)
  • Module software/calibration part number and programming status
  • Ignition state vs BCM wake/sleep status

Diagnostic algorithm

  1. Connect an OEM-capable diagnostic tool and read all stored DTCs and freeze frame data. Note time of occurrence and related codes.
  2. Verify battery condition and correct charging voltage. Recharge or replace battery if low or degraded.
  3. Inspect BCM connectors and wiring harness for damage, corrosion or water intrusion. Repair as needed.
  4. Check and restore proper power and ground to the BCM; verify fuses and fusible links protecting BCM circuits.
  5. Verify CAN bus health: measure CAN_H/CAN_L voltages and check for error frames or multiple module communication faults.
  6. If wiring and power are OK, attempt a re-initialization or relearn procedure per OEM service information (some faults clear after coding restore).
  7. Attempt to read BCM configuration/coding. If corrupted, reprogram/recode the BCM using OEM diagnostic software and correct calibration file for VIN.
  8. If programming fails repeatedly or the BCM reports EEPROM/flash hardware faults, consider replacement of BCM and follow OEM procedures for module coding, immobilizer alignment and vehicle programming.
  9. After any repair or module replacement, clear DTCs and perform full system check; monitor for recurrence and road test to confirm functionality.

Likely causes

  • Recent battery disconnect, replacement or jump-start while module was writing/calibrating
  • Failed BCM after software update or dealer reflash
  • Bad ground or corroded power connector causing voltage dips/loss during writes
  • Internal EEPROM/flash wear-out or corruption
  • Short or open circuit in BCM power feed or B+ fuse blown/intermittent
  • CAN bus short, open, or excessive load preventing BCM from reading configuration

Fault status

⚠️ Status
BCM configuration/memory fault — module detected corrupt or invalid configuration data or internal memory failure. May be stored as permanent or active depending on occurrence and module self-test.
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 1-4 hours

Similar codes

B2618 B2620 U0100 P0605 U0121
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