Home / DTC / B10D9 — Body Control Module: Invalid Configuration Data

B10D9 — Body Control Module: Invalid Configuration Data

Detailed page for trouble code B10D9.

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Code

B10D9

Generic B — Body

Body Control Module: Invalid Configuration Data

Brand: Generic
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

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

  1. 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.
  2. Verify battery condition and ensure stable power (use a battery charger or stable DC supply during programming).
  3. Inspect BCM connectors and wiring for corrosion, damaged pins, or water intrusion. Repair any wiring faults before further diagnostics.
  4. Check for VIN, part number, and calibration ID mismatches between BCM and vehicle records. Confirm whether BCM was recently replaced or reflashed.
  5. If coding/parameters are accessible, compare current coding/calibration to factory specification. Export/record current values before changes.
  6. Attempt to re-apply correct coding/calibration using manufacturer scan tool following published procedure. Monitor for errors during write/flash.
  7. If reflash fails or errors persist, perform a full reprogram of the BCM with latest factory software and calibration. Ensure uninterrupted power throughout.
  8. After successful programming, clear DTCs and perform functional checks of affected body systems. Re-scan all modules for lingering errors.
  9. 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.
  10. 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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