ABS Control Module Internal Fault
An internal fault in the ABS control module has been detected.
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 ABS control module has noticed something wrong inside itself, which affects its ability to control the brakes properly.
What the computer is actually seeing
The ABS module detects inconsistencies in its internal communication or operational logic, triggering the C1380 fault code.
What a healthy reading looks like
Expected voltage for the ABS control module is typically around 12V with stable signals for data communication.
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 the ABS module connectors for corrosion or damage. Are they secure and clean?
- 22. Inspect wiring for any signs of wear or damage. Are any wires frayed or broken?
- 33. Verify the ABS module power supply. Is it receiving around 12V?
- 44. Connect a scan tool and clear the code; see if it returns. Did it come back?
- 55. If the code returns, consider checking for software updates or reprogramming the module.
Common causes
- Faulty ABS control module
- Poor wiring/connectors to the ABS module
- Corrosion or damage in the module connectors
- Software issues in the ABS module
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally drivable, but braking performance may be affected.
Will this code come back?
If the underlying issue isn't fixed, yes, the code will likely return.
Why is this code paired with other ABS codes?
Internal faults can trigger multiple codes related to ABS functionality.
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