U0415 – Invalid Data Received From ABS Control Module means another control unit in the vehicle—usually the ECM, TCM, BCM, or steering module—is detecting corrupted, missing, or contradictory data coming from the ABS module. Since the ABS/ESC module shares critical information like wheel speed, brake pressure, yaw rate, traction control status, and stability commands, bad data can cause warning lights, reduced stability control, harsh shifting, or unpredictable braking behavior. This guide explains what U0415 means, symptoms, causes, diagnosis steps, and the most effective repair solutions.
What Does U0415 Mean?
U0415 is a generic OBD-II U-code that indicates a data-validity problem originating from the ABS control module. This code does **not** mean communication is lost; instead, the receiving module is getting values that do not make sense—such as impossible wheel speeds, inconsistent brake pressure readings, or corrupted CAN packets.
Invalid ABS data can disrupt traction control, transmission behavior, cruise control, and AWD systems. The cause may be a failing wheel speed sensor, wiring problems, unstable voltage, internal ABS module defects, or CAN network interference.
Quick Reference
- OBD-II Family: U-Code (Data Validity)
- Scope: Generic
- System: ABS / ESC / CAN Bus
- Difficulty Level: Moderate
- Estimated Repair Cost: €70–€950+
- Last Updated: 22 November 2025
Real-World Example / Field Notes
A compact SUV came in with traction control and ABS lights illuminated. The TCM and ECM stored U0415. Live data showed the right-rear wheel speed signal occasionally jumping to unrealistic values. A failing wheel speed sensor was sending bad data to the ABS module, which then relayed invalid information to other systems. Replacing the sensor fixed all related codes.
Another case involved a sedan where the transmission shifted harshly. The TCM flagged U0415 due to inconsistent brake pressure data from the ABS module. The root cause was corrosion inside the ABS pump connector from water intrusion. Cleaning the pins and resealing the housing restored proper communication.
Symptoms of U0415 – Invalid Data From ABS Control Module
- ABS or ESC warning lights: Stability systems disabled.
- Traction control inactive: Vehicle may spin the wheels more easily.
- Harsh or erratic shifting: TCM relies on brake and wheel speed data.
- Cruise control not working: Invalid ABS signals disable cruise functions.
- Inaccurate or fluctuating speedometer: Bad wheel speed data.
- Longer stopping distances: ABS fallback mode.
- Scan tool communication delays: Network instability or invalid packets.
Common Causes of U0415
Most Common Causes
- Faulty wheel speed sensor sending incorrect data
- Corroded or loose ABS module connectors
- Damaged wiring between wheel sensors and ABS module
- Weak battery or alternator voltage causing corrupted CAN messages
- Internal ABS module malfunction
Less Common Causes
- Water intrusion in ABS pump/control unit
- Failed yaw rate or brake pressure sensors contaminating data
- Damaged CAN wiring near engine bay or wheel wells
- Aftermarket electronics causing network interference
- Faulty CAN gateway or distribution block
Diagnosis: Step-by-Step Guide
Diagnosis focuses on identifying unstable wheel speed inputs, corrupted ABS data, or module power issues.
Tools You’ll Need
Advanced scan tool, wiring diagrams, multimeter, backprobe kit, oscilloscope (optional), and a lift or jack stands.
- Scan all modules: Look for wheel speed sensor codes, brake pressure codes, or voltage errors.
- Check freeze-frame data: Identify conditions when invalid ABS data occurred.
- Inspect wheel speed sensors: Look for damaged wires, debris buildup, or cracked tone rings.
- View live wheel speed data: Look for spikes, dropouts, or mismatched values across wheels.
- Check ABS module power and grounds: Ensure stable voltage and tight ground connections.
- Inspect ABS connectors: Look for corrosion, water intrusion, or loose terminals.
- Check CAN wiring near ABS module: Inspect for chafing or road debris damage.
- Road test while monitoring data: Confirm which signal goes invalid during the failure.
- Perform module reset or software update: Some models require ABS calibration updates.
- Oscilloscope test: Identify noisy or corrupted wheel speed sensor waveforms.
Pro Tip: Most U0415 issues originate from a single wheel speed sensor giving incorrect data—not the ABS module itself. Always verify sensor values before replacing expensive components.
Possible Fixes & Repair Costs
- Replace faulty wheel speed sensor: €70–€180
- Clean/repair ABS module connectors: €20–€90
- Repair wiring near wheel wells: €60–€220
- Replace brake pressure or yaw rate sensor: €120–€300
- ABS control module replacement: €350–€950+
- Charging system repair (voltage issues): €120–€400
Can I Still Drive With U0415?
Driving is possible, but not ideal. ABS and traction control may be partially or fully disabled, which increases stopping distance and reduces stability on slippery roads. Harsh shifting or cruise control issues may also occur. You should repair U0415 promptly, especially before driving in rain, snow, or high-speed conditions.
Related Codes
- U0419 – Invalid Data Received From Steering Effort Control Module
- U0418 – Invalid Data Received From Brake System Control Module
- U0417 – Invalid Data Received From Park Brake Control Module
- U0416 – Invalid Data Received From Vehicle Dynamics Control Module
- U0414 – Invalid Data Received From Four-Wheel Drive Clutch Control Module
- U0413 – Invalid Data Received From Battery Energy Control Module B
- U0412 – Invalid Data Received From Battery Energy Control Module A
- U0411 – Invalid Data Received From Drive Motor Control Module
- U0409 – Invalid Data Received From Alternative Fuel Control Module
- U0408 – Invalid Data Received From Throttle Actuator Control Module
Key Takeaways
- U0415 indicates the ABS module is sending invalid or corrupted data.
- Most causes involve faulty wheel speed sensors or wiring issues.
- ABS, traction control, and transmission behavior may all be affected.
- Fixing the root cause restores stability, braking performance, and drivability.
FAQ
Does U0415 mean the ABS module is bad?
No. Most cases involve a faulty wheel speed sensor or wiring sending bad data through the ABS module.
Can U0415 affect transmission shifting?
Yes. The TCM relies on ABS wheel speed data to manage shift timing.
Is it safe to drive with U0415?
Short distances may be fine, but ABS and traction control may be compromised. Avoid driving in slippery conditions.
Will a weak battery cause U0415?
Yes. Low voltage can corrupt CAN data coming from the ABS module.
Does U0415 always appear with ABS lights?
Usually, but not always. Sometimes only the traction control light comes on.