U0415 – Invalid Data Received From Anti-Lock Brake System Control Module

U0415 means your vehicle received bad or implausible information from the Anti-Lock Brake System (ABS) control module. You may notice ABS, traction control, or stability control warnings and reduced brake assist features. The engine may also limit power if it cannot trust wheel-speed related data. According to factory diagnostic data, this code indicates “Invalid Data Received From Anti-Lock Brake System Control Module.” U-codes stay intentionally general by SAE design, so U0415 does not prove the ABS module failed. You must confirm whether the issue comes from the ABS module, its power/grounds, its network wiring, or corrupted sensor inputs the ABS reports.

U0415 Quick Answer

U0415 points to invalid ABS data on the network, not a guaranteed failed ABS module. Check ABS module power/ground integrity and network wiring first, then verify the ABS data stream for plausibility.

What Does U0415 Mean?

The official U0415 meaning is “Invalid Data Received From Anti-Lock Brake System Control Module.” In plain terms, another module on the car decided it cannot trust ABS information. That “other module” might be the ECM/PCM, BCM, steering, or stability control module, depending on the vehicle. When that module rejects ABS data, it often disables ABS-related functions and logs U0415 to document the mismatch.

Technically, the receiving module monitors the ABS module’s network messages for plausibility and consistency. It does not just check that messages exist. It checks whether the content makes sense for current conditions. A message can arrive on time and still fail plausibility due to corrupted data bytes, a network integrity problem, or ABS inputs that make the ABS report impossible values. That difference matters because a simple “communication loss” test can pass while U0415 still sets.

Theory of Operation

On most vehicles, the ABS module broadcasts wheel-speed, brake switch status, yaw/accel support data, and ABS/traction state over the network. Other modules use that data to manage stability control, cruise control, transmission shifting, and torque reduction. Under normal conditions, modules agree on shared facts. Wheel speeds track vehicle speed, and they change smoothly. The network carries these messages with consistent timing and correct data formatting.

U0415 sets when a receiving module gets ABS data that fails its internal “reasonableness” checks. Corrupted network data can cause that. Voltage loss at the ABS module can also corrupt outputs without a total dropout. A third path involves bad sensor inputs. For example, a wheel speed sensor signal can glitch, then the ABS module reports a speed jump that other modules reject. The fix starts with proving whether the network and ABS module power/grounds stay clean under load.

Symptoms

U0415 symptoms usually affect ABS-related features first, then stability and drivability functions that rely on ABS data.

• Scan tool: ABS data PIDs may drop out, freeze, or show values that disagree with other modules, even though the ABS module still “responds” to a scan.
• ABS light: ABS warning lamp on, sometimes with an intermittent pattern over bumps or during wet conditions.
• Traction/Stability lights: Traction control or ESC warnings on, with those systems disabled or limited.
• Brake feel/behavior: Normal base braking remains, but ABS events may not occur when expected on loose surfaces.
• Speed-related features: Cruise control cancels, speedometer stability changes, or shift quality changes on some platforms.
• Engine response: Reduced power or unexpected torque reduction during acceleration if the ECM cannot trust wheel-speed data.

Common Causes

• ABS module power supply fault: A weak B+ feed or failing relay drops module voltage and corrupts the ABS data other modules expect to see.
• ABS module ground voltage drop: High resistance at a ground eyelet or splice lets the ABS module reset or distort messages during braking events.
• CAN bus wiring damage near ABS harness: Chafed, pinched, or stretched CAN wiring near the hydraulic unit can cause intermittent invalid frames instead of a clean “no communication” fault.
• Connector pin fit or corrosion at the ABS module: Fretting or water intrusion increases resistance and creates message errors that appear as “invalid data received” rather than total bus failure.
• Network interference from another module on the same bus: A module with an internal short or failing transceiver can inject noise and make otherwise good ABS data look implausible to the receiving module.
• ABS internal processing fault (rare): An internal module fault can produce out-of-range calculated values or corrupted message content without losing network presence.
• Low system voltage during crank or heavy load: A weak battery or charging issue can cause brief brownouts that scramble data timing and trigger U0415 as a plausibility fault.
• Software mismatch or configuration issue after repairs: Incorrect coding, variant configuration, or an incomplete programming event can make message IDs or scaling disagree across modules.

Diagnosis Steps

Tools: a scan tool that can run a full network scan and read ABS data PIDs, a DVOM for voltage-drop testing, and accurate wiring diagrams for power, ground, and CAN circuits. Use a backprobe kit and terminal test tools to avoid spreading pins. If available, use a lab scope for CAN integrity checks during a road test.

1. Confirm U0415 and record freeze-frame data and DTC status (pending vs confirmed). Focus on ignition state, vehicle speed, and any ABS/ESP/U-codes stored in other modules. A pending U0415 often points to an intermittent event that you must reproduce.
2. Run a full network scan and verify the ABS module appears and communicates. If the ABS module does not show up, shift the diagnostic toward power/ground or a hard network fault first. Record any companion codes like “lost communication,” voltage, or internal control module faults.
3. Check fuses, relays, and power distribution that feed the ABS module before unplugging anything. Load-test suspect fuses with the circuit powered, not just visually. Confirm the ignition feed and battery feed match the wiring diagram paths.
4. Verify ABS module power and ground under load with voltage-drop testing. Command an ABS output test if your scan tool supports it, or turn on high electrical loads. Keep ground drop under 0.1V while the circuit operates, and verify the B+ feed does not sag during the same load.
5. Inspect the ABS module connector, terminals, and sealing closely. Look for water tracks, green corrosion, spread pins, and signs of prior probing. Tug-test the harness near the hydraulic unit and along the frame where it flexes.
6. Check for related plausibility issues in live data. Compare wheel speed sensor readings for obvious dropouts and compare brake switch status to pedal input. You do not replace sensors yet; you use this step to see if the ABS module could be broadcasting implausible values.
7. Evaluate CAN bus integrity with ignition ON, because bias voltage only exists when the network powers up. Measure at the ABS connector or a convenient splice point per the diagram. If you see unstable bias or obvious shorts, isolate by unplugging modules one at a time per OEM procedure.
8. If U0415 sets intermittently, use a scan tool snapshot during a test drive. Freeze frame shows conditions when the DTC set, while a snapshot captures the moment the fault reoccurs. Trigger the snapshot when warning lamps flicker, ABS data drops out, or the scan tool flags an event.
9. Perform targeted continuity and short-to-power/short-to-ground tests only after you confirm power/ground stability. Disconnect the battery and modules per OEM guidance to protect electronics. Verify CAN circuits do not show unwanted continuity to ground or each other beyond what the network design specifies.
10. After repairs, clear codes and perform a verification drive under similar conditions to the freeze frame. Re-scan all modules and confirm U0415 stays out as a pending and confirmed DTC. If the code returns with stable power/ground and clean wiring, verify software level and configuration before considering module replacement.

Professional tip: “Invalid data received” often means the ABS module still talks on the network. Do not treat it like a simple open circuit. Prove clean power and low ground drop first, then prove the CAN circuits stay stable with ignition ON and during vibration.

Possible Fixes

• Repair power feed, fuse, relay, or power distribution faults that supply the ABS module.
• Clean, tighten, and repair ground points, then recheck ground voltage drop under load.
• Repair CAN wiring damage, chafing, or poor splices near the ABS module harness.
• Clean and restore connector terminal tension, then ensure proper sealing against water intrusion.
• Repair the root cause of low system voltage, such as battery or charging system issues.
• Update software or correct module configuration when a programming or variant mismatch causes data incompatibility.
• Replace and program the ABS control module only after power, ground, connector, wiring, and network integrity tests pass.

Can I Still Drive With U0415?

You can often drive with a U0415 code, but you should treat it as a braking safety warning. U0415 means another module received implausible or invalid ABS data. That can disable ABS, traction control, and stability control. Your base hydraulic brakes usually still work, but wheel lockup risk increases on slick pavement. Hard stops can feel different, especially on wet roads or gravel. If the brake warning light stays on, if the pedal feels abnormal, or if the vehicle pulls, stop driving and tow it. Avoid towing heavy loads or spirited driving until you confirm the fault and restore reliable ABS communication.

How Serious Is This Code?

U0415 ranges from an inconvenience to a real safety issue. It feels minor when the only effect is an ABS/traction lamp and normal braking in dry conditions. It becomes serious when the vehicle loses stability control support, especially in rain, snow, or emergency maneuvers. Some vehicles also limit cruise control or certain driver-assist features when ABS data looks invalid. Do not ignore it if you see multiple network U-codes, low-voltage history, or intermittent no-start events. Those patterns point to a broader network or power issue. Fix the root cause before you rely on ABS-related safety systems again.

Common Misdiagnoses

Many repairs go sideways because techs replace the ABS module after seeing “Invalid Data.” That title does not prove the ABS module failed. The receiving module may reject ABS messages due to low system voltage, a shared ground problem, corrosion in a splice pack, or CAN wiring damage near the radiator support or left frame rail. Another common mistake involves ignoring pending vs confirmed U0415 status. A single pending event after a jump-start often clears after voltage stabilizes. Shops also misread “invalid data” as a wheel speed sensor failure without checking scan tool data. Prove the network and power integrity first, then prove sensor plausibility with live data.

Most Likely Fix

The most common confirmed repair direction involves restoring clean power and ground to the ABS control module and the network it shares. Start with battery condition, charging output, and voltage-drop tests on ABS power and grounds under load. Next, correct connector issues at the ABS hydraulic unit and any inline junctions. Look for water intrusion, terminal spread, and green corrosion. If the scan tool sometimes loses the ABS module, focus on CAN wiring integrity and harness routing damage. Consider module replacement or programming only after you prove stable powers, grounds, and network signals.

Repair Costs

Repair cost depends on whether the root cause is a wheel speed sensor, wiring, connector condition, or the hydraulic control unit. Start with electrical checks before replacing brake system components.

Last updated: April 1, 2026