B1001Body Control

Option Configuration Error

B1001 indicates the control module's stored configuration does not match the vehicle's actual options or a connected module. It commonly appears after a module swap or programming error.

🚗 Yes, this is usually a configuration mismatch rather than a hardware fault.
LOW
severity
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🎯 Top Causes, Ranked by Likelihood

#1Module not configured to the vehicle$50-$200
45%
A replaced module needs to be programmed with the correct options.
#2Mismatched option coding$50-$200
30%
The stored options do not match installed equipment.
#3Software/PROM mismatch$100-$300
15%
Wrong software or calibration loaded on the module.

🩺 Common Symptoms

💰 Repair Cost: DIY vs Shop

DIY Cost
$0-$100
Shop Cost
$75-$300

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose B1001

1Confirm whether a module was recently replaced
2Verify the vehicle option coding with a capable scan tool
3Reprogram the module to match the vehicle configuration
4Clear the code and recheck

❓ Frequently Asked Questions

What does B1001 mean?
The module's saved configuration does not match the car's actual options.
Is B1001 serious?
No, it is usually a programming or coding issue, not a hardware failure.
How do I fix B1001?
Reconfigure or reprogram the module to match the vehicle with a proper scan tool.

🔗 Related Codes

B1000B1342U0140U0155
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