What it means
A receiving control module has detected invalid data from Electronic Brake Booster Control Module B. The code does not specify which data is invalid or what effect it has on braking.
How it works
Electronic Brake Booster Control Module B sends booster status and related information to other control modules. U0560 is set when a receiving module rejects data from Module B as invalid; the code alone does not prove the booster has stopped assisting.
Common causes
Most likely first.
- Module internal fault or sensor input drift
- Software version mismatch after replacement
- Gateway module routing CAN messages incorrectly
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
How to diagnose it
- Scan brake, chassis, and body modules and record freeze-frame and companion codes to identify the receiver and conditions for U0560.
- Check for brake or stability warnings and note any change in pedal effort, assist, or stopping behavior.
- Inspect Electronic Brake Booster Control Module B's connectors and harness for looseness, corrosion, damaged pins, or water exposure.
- Test its power, ground, and network connections using vehicle wiring information and the manufacturer's specification.
- Review gateway routing, configuration, and software history, especially if Module B or another network module was recently serviced.
- If communication and setup are correct, use vehicle-specific diagnostics to test Module B and its inputs.
Common fixes
- Secure or repair a loose or corroded Module B connector.
- Repair damaged network or supply wiring and restore a sound ground.
- Correct gateway routing or module configuration if incorrect.
- Program the correct software where a version mismatch is confirmed.
- Repair or replace Electronic Brake Booster Control Module B after testing confirms an internal fault.
Can I keep driving?
A brake warning, hard pedal, reduced assist, or longer stopping distance means you should stop driving and arrange inspection or towing. With no change in braking, limit driving and remain alert, because a booster fault can make the pedal harder to operate.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.