U0415 medium Severity

U0415: Invalid data received from Anti‑Lock Brake System (ABS) Control Module

May disable ABS, traction control, and stability systems; increased braking distances in low‑traction conditions

Overview

U0415 invalid data from ABS control module CAN bus communication ABS wheel speed sensors wiring connectors module malfunction

Common Symptoms

  • ABS warning light illuminated
  • Traction control or ESC light on
  • Check engine light activated
  • Reduced ABS functionality
  • Unstable braking or longer stopping distance

Most Common Causes

Faulty ABS control module sending invalid data high

ABS module may be defective or sending corrupted data over CAN bus

Damaged, corroded, or loose wiring/connectors between ABS module and PCM/ECM high

Poor electrical connection often leads to implausible data

Malfunctioning wheel speed sensor(s) medium

Sensor faults can generate incorrect inputs leading ABS to send invalid data

Unstable vehicle voltage or battery/alternator issues medium

Voltage fluctuations may cause CAN communication errors

CAN bus interference or grounding issues medium

Network interference can corrupt module messages

Diagnostic Steps

  1. Retrieve and confirm U0415 and any related codes with a professional OBD‑II scan tool
    Expected: Presence of U0415; possibly other ABS or CAN‑bus related codes
    Interpretation: Validates that ABS communication issues exist and checks for more specific codes
  2. Visually inspect ABS module connectors and wiring harnesses for corrosion, damage, or looseness
    Expected: Good electrical integrity and secure connections
    Interpretation: Faults here often cause invalid data transmission
  3. Test wheel speed sensors for correct resistance and signal output
    Expected: Sensor readings within OEM specifications
    Interpretation: Invalid sensor data can propagate through ABS module
  4. Check CAN bus voltage levels and network integrity between modules
    Expected: Stable CAN bus voltage (~2.5V nominal when idle)
    Interpretation: Abnormal voltages suggest bus interference or grounding problems
  5. If wiring and sensors pass tests, test or swap ABS control module with known good unit
    Expected: No invalid data errors after module swap
    Interpretation: Confirms defective ABS control module

Repair Solutions

Repair or replace damaged wiring/connectors medium
Estimated Cost: $50 - $250

Fixing electrical faults often resolves invalid data issues

Replace malfunctioning wheel speed sensor(s) medium
Estimated Cost: $50 - $150

Sensor replacement recommended when out‑of‑spec readings detected

Replace or reprogram ABS control module hard
Estimated Cost: $200 - $900

May require OEM reprogramming and calibration

Stabilize vehicle electrical system (battery/alternator check) easy
Estimated Cost: $100 - $300

Ensure proper voltage to avoid CAN errors

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Assuming U0415 is direct ABS mechanical failure without checking CAN communication integrity

Frequently Asked Questions

What does a U0415 diagnostic trouble code signify?

When your OBD-II scanner reads U0415, it means: Invalid data received from Anti‑Lock Brake System (ABS) Control Module. This code is related to the vehicle's Sensors.

Is it safe to drive with a U0415 code?

With a severity level of medium, may disable ABS, traction control, and stability systems; increased braking distances in low‑traction conditions

How do I know if I have code U0415?

Common symptoms include: ABS warning light illuminated, Traction control or ESC light on, Check engine light activated. You might also notice the Check Engine Light is on.

What causes the U0415 code?

This code is frequently triggered by: Faulty ABS control module sending invalid data, Damaged, corroded, or loose wiring/connectors between ABS module and PCM/ECM, Malfunctioning wheel speed sensor(s).

What is the price difference for fixing U0415?

Repair costs depend on the specific failure. A simple Replace malfunctioning wheel speed sensor(s) replacement is relatively affordable ($50-$150), whereas a Replace or reprogram ABS control module repair is more expensive, potentially reaching $900.

What cars are affected by the U0415 code?

The U0415 code is a generic powertrain code, meaning it applies to almost all makes and models, such as Honda, Toyota, VW, Ford, and Chevy.

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