ABS Control Module Internal Failure
There’s a problem inside the ABS control module.
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 anti-lock brake system (ABS) control module is failing or has failed, which means the ABS will not work properly, affecting braking performance and safety.
What the computer is actually seeing
The ABS control module is detecting internal faults via various self-tests by monitoring electrical signals and internal components.
What a healthy reading looks like
Module voltage should be between 9-16 volts; internal resistance should be within manufacturer specifications, typically less than 5 ohms for key circuits during diagnostics.
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 battery voltage; it should be between 9-16 volts. If not, charge or replace the battery.
- 22. Inspect the ABS module connectors for corrosion or loose connections; fix any issues found.
- 33. Verify the wiring harness for continuity and shorts using a multimeter. Repair as necessary.
- 44. Perform an ABS self-test using a scan tool to check for other fault codes or abnormalities. Note any additional codes present for further diagnostics.
- 55. If no wiring or connector issues are found and the ABS control module shows faults, consider replacing the ABS control module. Validate with manufacturer specifications before replacement.
Common causes
- Corroded connectors
- Damaged wiring harness
- Internal component failure in ABS module
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
No, driving with a C0335 code is not safe as you may lose ABS functionality and increase the risk of brake failure in slippery conditions.
Will this code come back after replacing the module?
If the wiring and connections are clear and the new module is compatible, it should not return. Always verify with a diagnostic scan post-repair.
Why do other codes appear with C0335?
Other codes may indicate issues with related sensors or wiring that could affect ABS operation, so it's important to diagnose all codes together.
Working a real vehicle right now?
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