C0563: ABS Control Module Performance

What it means

The ABS control module has detected an internal performance fault. The code does not identify a specific failed component.

How it works

The ABS control module manages anti-lock braking and may also coordinate stability functions. This code indicates that the module has detected a performance problem, but the code by itself does not identify which internal function or external input caused it.

Common causes

Most likely first.

1. Manufacturer-specific code definition
2. Vehicle-specific diagnostic data needed

Symptoms

• Symptoms depend on the vehicle-specific fault

How to diagnose it

1. Use an ABS-capable scan tool to read all module codes and freeze-frame data, since companion codes may identify the condition behind this performance fault.
2. Check the vehicle-specific service information for the exact C0563 definition and the diagnostic conditions that set it.
3. Inspect the ABS module power, ground, connectors, and harness for loose connections, corrosion, or visible damage.
4. Review live ABS data for implausible wheel-speed, brake-pressure, or other readings that may point to an input problem.
5. Perform the vehicle-specific module and circuit tests before concluding that the ABS control module itself has failed.

Common fixes

• Repair a loose, corroded, or damaged ABS module connection found during inspection.
• Repair wiring or an external sensor circuit identified by companion codes or live data.
• Restore module power or ground if testing finds a supply fault.
• Reprogram or replace the ABS control module only if the vehicle-specific tests confirm an internal fault.

Can I keep driving?

Driving impact depends on the fault: anti-lock braking or stability assistance may be reduced or unavailable even if normal braking remains. Drive cautiously, leave extra stopping distance, and avoid slippery roads until the vehicle-specific cause is identified.