Body Control Module (BCM) Internal Failure
BCM detects an internal error or malfunction.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The Body Control Module has found something wrong inside itself that can affect its ability to control different systems in the vehicle.
What the computer is actually seeing
The BCM monitors its internal circuit and fails if it detects issues such as unexpected voltage levels or missing signals in its own components.
What a healthy reading looks like
Normal power supply to the BCM should be between 10.5V and 14.5V; internal communication errors lead to malfunction.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Inspect the battery for a voltage below 10.5V; charge or replace the battery as necessary.
- 2Check BCM wiring and connectors for corrosion or loose connections.
- 3Inspect for shorts or open circuits on the BCM related wires.
- 4Use a scan tool to check for additional BCM codes that might indicate the specific failure.
Common causes
- Faulty Body Control Module (BCM)
- Corroded or loose wiring connections
- Low battery voltage
- Short circuits in the BCM circuits
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It might be drivable, but various systems could fail, causing safety issues.
Will the code come back?
If the BCM is failing or wiring issues exist, yes, it likely will return.
What other issues can this cause?
It can affect things like lights, alarms, and locks, leading to unexpected behavior.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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