B00D7

Code

Generic B — Body

Body Control Module Memory Corruption

Brand: Generic

Type: B — Body

Views: UK: 7 EN: 11 RU: 7

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Failed or interrupted module programming/update (power loss during flash/EEPROM write)
Internal BCM EEPROM or flash memory failure
Corrupted calibration or parameter table (checksum/CRC mismatch)
Low or unstable battery/voltage spikes during non‑volatile memory access
Poor power or ground connections to the BCM
Water ingress/corrosion or physical damage to the module

Symptoms

BCM stores B00D7 and may set other codes
Intermittent or permanent loss of body functions (lighting, door locks, windows, wipers, interior lights)
Random resets or reboots of BCM
Communication errors on vehicle network (CAN bus) with other modules
Incorrect or defaulted configuration settings after ignition cycles
Multiple unrelated modules showing faults or behaving abnormally

What to check

Retrieve and save full DTC list and freeze frame data; note any related network or powertrain codes
Check vehicle service history for recent BCM programming or battery disconnects
Measure battery voltage (engine off and cranking) and charging system voltage (engine running)
Visually inspect BCM connector(s) and wiring for corrosion, bent pins, water damage, or loose connections
Check module ground(s) for low resistance to chassis/negative battery
Scan CAN/bus activity for communication errors or lost messages (U-codes)

Signal parameters

Battery voltage (key OFF, key ON, engine run) — typically 11.5–14.5 V expected
Cranking voltage (minimum acceptable per vehicle spec)
CAN bus activity/bit error rate / message frequency for BCM node
BCM internal status flags (NVM error, CRC/checksum status) if available via OEM scanner
Ignition state and sleep/wake events logged by BCM
Number of failed write/erase cycles or reported EEPROM/FLASH error counters (OEM data)

Diagnostic algorithm

Record all stored codes and related freeze frame; note time and conditions when code set
Verify battery condition and charging system; charge or replace battery if low and retest
Inspect BCM area and connectors for corrosion, water ingress, or damage; repair wiring and connectors as required
Verify good power and ground to the BCM (measure voltage at module connector, check ground resistance)
Check vehicle network for communication faults; repair wiring or bus drivers if necessary
If recent reflash/update is suspected, confirm correct firmware version and reattempt programming using manufacturer-approved tools and procedures (ensure stable power supply, battery charger or fused jumper)
Perform manufacturer-recommended BCM reset/initialization procedure (soft reset, NVM clear, or re-learn) if available — back up current configuration before clearing
Re-scan for codes after reprogramming/reset and cycle ignition/driving to confirm fault does not return
If NVM/EEPROM/Flash hardware failure is confirmed or code persists after proper reflash and wiring repair, replace BCM and perform required coding/pairing with vehicle (immobilizer, keys, network addresses) per OEM instructions
After repair, verify all body functions and clear stored configurations restored or re-learned where necessary

Likely causes

Recent software update or reflash interrupted (power disconnect)
Weak battery or charging system fault at time of prior write
Loose/corroded BCM power or ground connections
Aging/faulty BCM memory hardware

Fault status

⚠️ Status

BCM reports non-volatile memory corruption (checksum/CRC failure). Some body functions or communications may be disabled. Further diagnostic steps required.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours