B-Codes Diagnostic Index (Body Control Module)

 

B-Codes Diagnostic Index (Body Control Module)

Complete directory for OBD2 Body (B-Series) DTC diagnostic codes. Select your specific trouble code below to view detailed symptoms, voltage measurements, and BCM troubleshooting steps.

1. Airbag & Restraint System Faults (B0000 - B00FF)

• B0007: Passenger Frontal Airbag Stage 1 Control Direct Line
• B0100: Electronic Crash Sensor / Hall Sensor Circuit Fault

2. BCM & Module Communication Faults (B1000 - B1399)

• B1000: Electronic Control Unit (ECU) Performance Malfunction
• B1001: Option Configuration Error / BCM Vin Mismatch
• B1325: Control Module Power Circuit Low Voltage Input

3. HVAC & Environmental Sensors (B1400 - B1699)

• B1421: Solar Sensor Circuit Sunload Side Diagnostic Guide
• B1600: Passive Anti-Theft System (PATS) Key Signal Error