OBD-II Standard B0873: OBD-II Standard OBD-II Universal E...

Symptoms

The body control module has lost learned values. Various body systems may not function correctly after battery disconnect. DTC B0873 is stored in the body control module.

Possible Causes

Battery was disconnected or discharged
Body control module EEPROM corruption
Software update failed
Module power supply interruption

Troubleshooting Steps

Step 1: Connect a diagnostic scanner and read body DTCs to confirm B0873
DTC B0873 is present with freeze frame data
Step 2: Inspect wiring and connectors in the affected circuit
Wiring intact, connectors clean and properly seated
Step 3: Perform component-level testing per manufacturer diagnostic procedure
Component values within specification or component confirmed faulty
Step 4: Clear the DTC and verify it does not return
DTC does not return after system self-test

How to Reset

Clear the DTC after repair using a diagnostic scanner. The code will clear automatically if the fault is no longer detected after 3 consecutive drive cycles.

Common Replacement Parts

varies: No parts replacement typically required; reprogramming needed (Confirm part number via VIN before ordering)

Frequently Asked Questions

Q: What does code B0873 mean?
This is a body-related diagnostic trouble code indicating an issue with the body system. The specific component should be diagnosed per the manufacturer's procedure.
Q: Is code B0873 safe to ignore?
If the code relates to the airbag system (SRS), it is NOT safe to ignore as airbags may not deploy in a crash. For other body systems, the vehicle can typically be driven but the affected feature may not work.

OBD-II Standard OBD-II Universal Error Code B0873