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Home / DTC / B2947 — Body Control Module Configuration Error

B2947 — Body Control Module Configuration Error

Detailed page for trouble code B2947.

34,405codes
59brands
11,914generic
22,491specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
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Code

B2947

Generic B — Body

Body Control Module Configuration Error

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

Causes

  • Incomplete or failed BCM programming/update
  • Replacement BCM not programmed or programmed with wrong calibration/VIN
  • Corrupted configuration memory in BCM
  • Intermittent or failed CAN/LIN communication preventing configuration validation
  • Low battery/voltage interruption during programming
  • Aftermarket modules or devices causing network conflicts

Symptoms

  • Multiple body functions erratic or inoperative (locks, lights, windows, wipers, HVAC, etc.)
  • Loss of communication with BCM via scan tool or intermittent comms
  • Other modules reporting related network or configuration faults
  • Warning lamps or messages related to vehicle electronics
  • Functions working only intermittently or default/limited behavior

What to check

  • Read all stored DTCs and freeze frame data from BCM and other network modules
  • Verify vehicle battery voltage and charging system stability (>=12.4V during service)
  • Inspect BCM connectors, pins, and ground points for corrosion or damage
  • Check for recent service history: BCM replacement, reflashing, or battery disconnection
  • Scan CAN/LIN network for module presence and message traffic (BCM should be present with expected IDs)
  • Confirm no aftermarket modules or accessories are connected to body networks

Signal parameters

  • CAN bus Tx/Rx messages and IDs for BCM (verify presence and frequency)
  • Module identifier/part number
  • Calibration ID (CALID) / software part number
  • Programmed VIN and configuration bytes
  • Supply voltage to BCM (key-on and during programming)
  • LIN messages if used for local networks (windows, mirrors, etc.)

Diagnostic algorithm

  1. Use an OEM-capable scan tool to read and save all DTCs and freeze frame data from the BCM and other modules.
  2. Verify and document battery voltage; connect a stable battery charger or maintainer if needed before programming procedures.
  3. Visually inspect BCM connectors, wiring, and grounds; repair any damage or corrosion and recheck communications.
  4. Confirm the BCM is present and communicating on the vehicle network. If BCM does not respond, check CAN bus power and termination.
  5. Check vehicle service history for recent BCM replacement or software update. If present, verify that the proper calibration and VIN were applied.
  6. Use the OEM tool to read BCM software part number/CALID and compare to factory build data or dealer database for correct variant.
  7. If configuration is incorrect or software is outdated/corrupt, follow manufacturer procedures to reflash/reprogram the BCM (ensure stable power and follow anti-theft/VIN programming steps).
  8. After programming, verify configuration values (VIN, feature options) and clear DTCs. Reboot modules if required and re-scan for codes.
  9. If reprogramming fails or configuration cannot be corrected, consider replacing the BCM with a proper, programmable unit and program it to vehicle specifications.
  10. After repair, confirm all affected body functions operate correctly and perform a road test if needed. Document programming and parts used.

Likely causes

  • Recent BCM replacement or software update that was not completed or used wrong calibration
  • CAN bus messages required for BCM configuration not present (network fault)
  • Corruption of BCM stored configuration due to low battery or internal fault
  • Installed module with mismatched software/VIN/calibration ID

Fault status

⚠️ Status
BCM configuration invalid or inconsistent with vehicle build — stored when module detects missing/incorrect programming, corrupt configuration, or network communication preventing proper configuration validation.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

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Code

B2947

HUMMER B — Body

Security System Sensor Power Circuit Low

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

Causes

  • Incomplete or failed BCM programming/update
  • Replacement BCM not programmed or programmed with wrong calibration/VIN
  • Corrupted configuration memory in BCM
  • Intermittent or failed CAN/LIN communication preventing configuration validation
  • Low battery/voltage interruption during programming
  • Aftermarket modules or devices causing network conflicts

Symptoms

  • Multiple body functions erratic or inoperative (locks, lights, windows, wipers, HVAC, etc.)
  • Loss of communication with BCM via scan tool or intermittent comms
  • Other modules reporting related network or configuration faults
  • Warning lamps or messages related to vehicle electronics
  • Functions working only intermittently or default/limited behavior

What to check

  • Read all stored DTCs and freeze frame data from BCM and other network modules
  • Verify vehicle battery voltage and charging system stability (>=12.4V during service)
  • Inspect BCM connectors, pins, and ground points for corrosion or damage
  • Check for recent service history: BCM replacement, reflashing, or battery disconnection
  • Scan CAN/LIN network for module presence and message traffic (BCM should be present with expected IDs)
  • Confirm no aftermarket modules or accessories are connected to body networks

Signal parameters

  • CAN bus Tx/Rx messages and IDs for BCM (verify presence and frequency)
  • Module identifier/part number
  • Calibration ID (CALID) / software part number
  • Programmed VIN and configuration bytes
  • Supply voltage to BCM (key-on and during programming)
  • LIN messages if used for local networks (windows, mirrors, etc.)

Diagnostic algorithm

  1. Use an OEM-capable scan tool to read and save all DTCs and freeze frame data from the BCM and other modules.
  2. Verify and document battery voltage; connect a stable battery charger or maintainer if needed before programming procedures.
  3. Visually inspect BCM connectors, wiring, and grounds; repair any damage or corrosion and recheck communications.
  4. Confirm the BCM is present and communicating on the vehicle network. If BCM does not respond, check CAN bus power and termination.
  5. Check vehicle service history for recent BCM replacement or software update. If present, verify that the proper calibration and VIN were applied.
  6. Use the OEM tool to read BCM software part number/CALID and compare to factory build data or dealer database for correct variant.
  7. If configuration is incorrect or software is outdated/corrupt, follow manufacturer procedures to reflash/reprogram the BCM (ensure stable power and follow anti-theft/VIN programming steps).
  8. After programming, verify configuration values (VIN, feature options) and clear DTCs. Reboot modules if required and re-scan for codes.
  9. If reprogramming fails or configuration cannot be corrected, consider replacing the BCM with a proper, programmable unit and program it to vehicle specifications.
  10. After repair, confirm all affected body functions operate correctly and perform a road test if needed. Document programming and parts used.

Likely causes

  • Recent BCM replacement or software update that was not completed or used wrong calibration
  • CAN bus messages required for BCM configuration not present (network fault)
  • Corruption of BCM stored configuration due to low battery or internal fault
  • Installed module with mismatched software/VIN/calibration ID

Fault status

⚠️ Status
BCM configuration invalid or inconsistent with vehicle build — stored when module detects missing/incorrect programming, corrupt configuration, or network communication preventing proper configuration validation.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

Similar codes

U0100 U0115 U0155 B2940 B2948 P0606
Repair manuals

Manual library for HUMMER

138

Browse 138 HUMMER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

HUMMER

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Code

B2947

MITSUBISHI B — Body

Down latch RH open:open timeout

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

Causes

  • Incomplete or failed BCM programming/update
  • Replacement BCM not programmed or programmed with wrong calibration/VIN
  • Corrupted configuration memory in BCM
  • Intermittent or failed CAN/LIN communication preventing configuration validation
  • Low battery/voltage interruption during programming
  • Aftermarket modules or devices causing network conflicts

Symptoms

  • Multiple body functions erratic or inoperative (locks, lights, windows, wipers, HVAC, etc.)
  • Loss of communication with BCM via scan tool or intermittent comms
  • Other modules reporting related network or configuration faults
  • Warning lamps or messages related to vehicle electronics
  • Functions working only intermittently or default/limited behavior

What to check

  • Read all stored DTCs and freeze frame data from BCM and other network modules
  • Verify vehicle battery voltage and charging system stability (>=12.4V during service)
  • Inspect BCM connectors, pins, and ground points for corrosion or damage
  • Check for recent service history: BCM replacement, reflashing, or battery disconnection
  • Scan CAN/LIN network for module presence and message traffic (BCM should be present with expected IDs)
  • Confirm no aftermarket modules or accessories are connected to body networks

Signal parameters

  • CAN bus Tx/Rx messages and IDs for BCM (verify presence and frequency)
  • Module identifier/part number
  • Calibration ID (CALID) / software part number
  • Programmed VIN and configuration bytes
  • Supply voltage to BCM (key-on and during programming)
  • LIN messages if used for local networks (windows, mirrors, etc.)

Diagnostic algorithm

  1. Use an OEM-capable scan tool to read and save all DTCs and freeze frame data from the BCM and other modules.
  2. Verify and document battery voltage; connect a stable battery charger or maintainer if needed before programming procedures.
  3. Visually inspect BCM connectors, wiring, and grounds; repair any damage or corrosion and recheck communications.
  4. Confirm the BCM is present and communicating on the vehicle network. If BCM does not respond, check CAN bus power and termination.
  5. Check vehicle service history for recent BCM replacement or software update. If present, verify that the proper calibration and VIN were applied.
  6. Use the OEM tool to read BCM software part number/CALID and compare to factory build data or dealer database for correct variant.
  7. If configuration is incorrect or software is outdated/corrupt, follow manufacturer procedures to reflash/reprogram the BCM (ensure stable power and follow anti-theft/VIN programming steps).
  8. After programming, verify configuration values (VIN, feature options) and clear DTCs. Reboot modules if required and re-scan for codes.
  9. If reprogramming fails or configuration cannot be corrected, consider replacing the BCM with a proper, programmable unit and program it to vehicle specifications.
  10. After repair, confirm all affected body functions operate correctly and perform a road test if needed. Document programming and parts used.

Likely causes

  • Recent BCM replacement or software update that was not completed or used wrong calibration
  • CAN bus messages required for BCM configuration not present (network fault)
  • Corruption of BCM stored configuration due to low battery or internal fault
  • Installed module with mismatched software/VIN/calibration ID

Fault status

⚠️ Status
BCM configuration invalid or inconsistent with vehicle build — stored when module detects missing/incorrect programming, corrupt configuration, or network communication preventing proper configuration validation.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

Similar codes

U0100 U0115 U0155 B2940 B2948 P0606
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MITSUBISHI

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Keep it short and practical. Up to 500 characters.
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