B1000

ECU Malfunction (Body Control Module)

Severity: Medium Body Control Generic OBD-II Code Est. Repair: $200 - $900

Schedule diagnosis soon. Continued driving may worsen the issue.

Quick Answer

B1000 means “ECU Malfunction (Body Control Module).” Severity: Medium. Estimated repair cost: $200 - $900. Most common sign: Various electrical symptoms depending on what the BCM controls on this vehicle (locks, lights, windows).

What Does B1000 Mean?

A general internal fault reported by the body control module.

Common Symptoms

Various electrical symptoms depending on what the BCM controls on this vehicle (locks, lights, windows)

Possible Causes

Internal BCM fault
Corrupted programming
Water intrusion damaging the module

How to Fix B1000 – Repair Guide

Reflash/reset if possible
Check for water intrusion near BCM mounting location
Replace BCM if faulty
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Budgeting for This Repair?

A typical B1000 repair runs about $200 - $900. If you'd rather spread the cost over time, estimate the payment with our free sister tool: Car Finance Calculator (50-state sales tax, trade-in equity, full amortization).

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Disclaimer: Information is for educational reference only and does not replace professional diagnosis. Actual causes and costs vary by vehicle make, model, year and condition. Always verify with a qualified technician.