Code
B11E4
Generic
B — Body
Body Control Module: Configuration Data Corrupt
AI status
Completed
Completed
100%
Causes
- Incomplete or failed software/firmware update
- Battery voltage loss or low voltage during programming
- Corrupted non-volatile memory (flash/EEPROM) in the BCM
- Water intrusion, corrosion or physical damage to BCM or connectors
- Intermittent power or ground connections
- Incompatible or incorrect calibration/software loaded
Symptoms
- One or more body systems not working or behaving incorrectly (locks, lights, wipers, windows, etc.)
- Multiple body-related fault codes stored
- Intermittent or permanent loss of communication with BCM on the network
- Vehicle fails to enter correct key/immobilizer programming state
- Settings (options, comfort features) lost or defaulted after power cycle
- Warning indicators related to body electronics or communication present on dash
What to check
- Read all stored and pending DTCs from BCM and other network modules with a capable scan tool
- Record freeze-frame data and stored events related to the fault
- Check vehicle battery state-of-charge and system voltage stability (cranking and charging)
- Inspect BCM connector(s) for corrosion, bent pins, water intrusion, or damaged locking tangs
- Verify power and ground circuits to BCM with meter (key on/off)
- Scan for network (CAN/LIN) communication errors and other modules reporting loss of communication
Signal parameters
- Battery voltage (key off, key on, during cranking)
- BCM wake/sleep state and network activity timestamps
- Number of reflash/program attempts or programming fault counters (if available)
- Presence/quality of CAN/LIN messages from and to BCM (message rate and error counters)
- Key/immobilizer pairing status and VIN/calibration ID in BCM
Diagnostic algorithm
- Connect OEM-level scan tool and read all codes from BCM and related modules; save reports
- Verify stable battery voltage (12.4–12.8V or charged per OEM) and connect charger/maintainer if needed
- Visually inspect BCM and connector for moisture, corrosion, or damage; repair wiring/connectors as required
- Check power and ground supplies at the BCM pins; repair any faults
- Clear DTCs and perform a controlled functional test to see if fault returns
- If code returns or configuration remains invalid, check software/calibration level and compare to OEM specifications and TSBs
- Follow manufacturer procedure to reprogram/reflash BCM using approved tool and correct calibration; ensure uninterrupted power during reflash
- If reflash fails or flash memory errors are reported, consider BCM replacement and program new unit with VIN, keys, and module-specific coding/calibration per OEM
- After programming or repair, verify all body functions, confirm no related communication codes, and perform final road or function checks
Likely causes
- Interrupted BCM reflash due to low battery or tool disconnect
- Failed BCM internal memory or controller hardware fault
- Poor battery/charging system condition at time of programming
- Damaged or corroded BCM connectors or harness
Fault status
Status
BCM configuration data corrupted or invalid. Module may have lost calibration or programming; reprogramming or replacement may be required.
Repair difficulty: Medium
Diagnostic time: 1.5-4.0 hours
Similar codes
Repair manuals
Brands with available manuals
8,230
The library contains 8,230 repair and diagnostic manuals. Choose a brand to open the full manual tree by year, model and trim.
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email