U0560

Code

Generic U — Network/User

Invalid Data Received From Electronic Brake Booster Control Module B

Brand: Generic

Type: U — Network/User

Views: UK: 26 EN: 36 RU: 26

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Page language: EN

Causes

Faulty Electronic Brake Booster Control Module B
Corroded, loose, or damaged connector at the EBB control module
Power supply or ground fault to the EBB control module
Intermittent or open CAN/LIN bus wiring, short to battery or ground, or poor termination
Faulty or incompatible software/calibration in the EBB or other network modules after an update
Electromagnetic interference or high-resistance splices on communication circuits

Symptoms

Brake assist or feel anomalies (depending on vehicle fail-safe strategy)
Brake warning lamp, ABS or traction control light illuminated
Reduced brake performance or limp-home mode for brake assist
Multiple communication-related DTCs present (other modules showing comms errors)
Possible intermittent operation of brake-related features

What to check

Read all stored and pending DTCs and freeze frame data with an OEM-capable scan tool
Check for other communication codes (e.g., U0100, U0073, U0561) and related module faults
Verify ignition state and battery voltage; repeat code retrieval after a full power cycle
Visually inspect EBB module connector and harness for corrosion, pins pushed back, or damage
Check module supply and ground circuits for correct voltage and low resistance to chassis
Inspect CAN/LIN wiring for cuts, pinched sections, aftermarket accessories, or poor splices

Signal parameters

CAN bus nominal recessive voltage ~2.5 V on CAN_H and CAN_L (verify per manufacturer spec)
Expected differential CAN waveform: clean dominant and recessive transitions without excessive noise or distortion
Message frequency for brake booster messages typically in the tens of Hz (consult vehicle data list for exact IDs and rates)
Signal integrity: low bit error rate, correct message IDs and expected payload length
Check for bus off or line errors reported by modules (error counters) via scan tool

Diagnostic algorithm

Capture all codes and freeze frame; record current network-related codes and conditions.
Clear codes and attempt to reproduce; note whether U0560 returns immediately or intermittently.
Confirm battery voltage is within nominal range; perform battery/charging system check if low.
Visually inspect EBB control module connector and harness; repair any corrosion, bent pins, or damaged wires.
Verify power and ground at the EBB module with a DVOM; compare to known good values and check for high resistance.
Scan the CAN/LIN network: check for additional modules reporting errors, bus off states, or unexpected message IDs.
Use oscilloscope or high-speed CAN tool at the module connector to inspect CAN_H and CAN_L for noise, missing recessive level, or improper termination.
Wiggle test wiring and connectors while monitoring network for errors to find intermittent faults.
If wiring and power/ground are good, verify software/calibration levels for the EBB and related modules; perform recommended reflashes or reprogramming.
If faults persist with correct wiring and software, consider replacing the EBB control module; follow OEM procedures for programming and VIN coding.
After repair, clear codes and perform road test or functional test to confirm U0560 does not return and related systems operate normally.

Likely causes

Poor connector pins or corrosion at the EBB module harness
CAN bus wiring shorted, intermittent, or missing termination resistor
EBB control module lost or low supply voltage or poor ground
Software mismatch after module replacement or incomplete reflash
Faulty transceiver inside the EBB module or another module on same network

Fault status

⚠️ Status

Invalid or corrupted communication data received from Electronic Brake Booster Control Module B. Inspect module communication, wiring, power/ground, and module software.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1-3 hours

Repair manuals