Battery Management System Discharge Controller Fault
There's a problem with the battery discharge controller in the battery management system.
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 battery discharge controller manages how the battery releases its power. When it has an issue, your vehicle may not get the right amount of power, affecting performance.
What the computer is actually seeing
The vehicle's computer sees abnormal voltage levels or communication errors from the battery management system, often indicating that the discharge controller isn't performing as it should.
What a healthy reading looks like
The system typically expects battery voltage between 12.6V (fully charged) and 13.8V (under load). If you see values outside this range, particularly below 11.8V, it triggers the fault.
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.
- 11. Check battery voltage with a multimeter. It should be between 12.6V and 13.8V. If it's below 11.8V, consider charging or replacing the battery.
- 22. Inspect all battery connections and ground wires for corrosion or damage. Clean or repair any found issues.
- 33. Check the wiring harness to the battery management system for continuity and signs of wear. Repair as needed.
- 44. Use a scan tool to verify if there are any other related fault codes present. Address those too if found.
- 55. If all previous checks are good, inspect the battery management system module itself; it may need testing or replacement.
Common causes
- Faulty battery or battery connections
- Damaged wiring or connectors to the battery management system
- Faulty battery management system module
- Corrosion at the terminals or ground points
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderately safe, but you may notice reduced performance. Address the issue soon.
Will this code come back after clearing?
Yes, if the underlying problem is not resolved, it will likely return after clearing.
Why does this code pair with other codes?
Issues in the battery management can cause multiple systems to be affected, leading to multiple codes being stored.
Working a real vehicle right now?
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