Code
B10D9
Generic
B — Body
Body Control Module: Invalid Configuration Data
AI status
Completed
Completed
100%
Causes
- Incomplete or failed module programming/reflash
- Incorrect calibration or coding applied to the BCM
- Corrupted EEPROM/flash memory inside BCM
- Battery loss or voltage interruption during programming
- Wrong BCM fitted (VIN/calibration mismatch from another vehicle)
- CAN/LIN bus communication errors causing partial config writes
Symptoms
- Multiple body functions inoperative or behaving incorrectly (lighting, locks, wipers, windows, remote key)
- One or more modules show communication faults or CAN bus errors
- Inability to complete module coding/programming via scan tool
- Persistent BCM-related warning messages or telltale lights
- Vehicle does not retain user settings or shows VIN/part-number mismatch
What to check
- Read all modules and record all stored DTCs and freeze frame data
- Confirm battery voltage stable (12.4–12.9 V) and supply to BCM during testing/programming
- Check for recent service history: was BCM reflashed, replaced or retrofit performed?
- Verify physical condition of BCM connector and harness for corrosion or damage
- Compare BCM part number, software/calibration ID and VIN with factory data
- Scan CAN/LIN bus for communication errors and related U-codes
Signal parameters
- BCM software part number (SW/P/N) and calibration ID (CVN)
- BCM coding value / configuration bytes
- Module VIN and hardware part number
- Module uptime / last reset timestamp
- Flash/program counter or last programming date/time
- Supply voltage at BCM (+12V, ground integrity)
Diagnostic algorithm
- Connect a dealer-level or capable scan tool. Read and record all DTCs from the BCM and other modules. Note freeze frame and related communication codes.
- Verify battery condition and ensure stable power (use a battery charger or stable DC supply during programming).
- Inspect BCM connectors and wiring for corrosion, damaged pins, or water intrusion. Repair any wiring faults before further diagnostics.
- Check for VIN, part number, and calibration ID mismatches between BCM and vehicle records. Confirm whether BCM was recently replaced or reflashed.
- If coding/parameters are accessible, compare current coding/calibration to factory specification. Export/record current values before changes.
- Attempt to re-apply correct coding/calibration using manufacturer scan tool following published procedure. Monitor for errors during write/flash.
- If reflash fails or errors persist, perform a full reprogram of the BCM with latest factory software and calibration. Ensure uninterrupted power throughout.
- After successful programming, clear DTCs and perform functional checks of affected body systems. Re-scan all modules for lingering errors.
- If programming cannot correct the fault or memory errors are reported, replace the BCM with a properly matched unit and perform required coding and module-to-vehicle matching.
- Re-test vehicle functions, confirm VIN/coding consistency, and road test. Document repair and any parts updated.
Likely causes
- Improper/recent software update or retrofit where coding was not completed
- BCM replaced with unit not coded/programmed to this vehicle
- Memory corruption from power loss during reflash
- Wiring/connectors causing intermittent power or data transfer during configuration
- Faulty BCM hardware (EEPROM/flash failure)
Fault status
Status
Body Control Module contains invalid or inconsistent configuration/calibration data; programming, coding or memory corruption suspected.
Repair difficulty: Medium
Diagnostic time: 1.5 - 4.0 hours
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