What Does U0418 Mean?
The brake system control module is transmitting invalid or corrupted data to other vehicle control modules. This affects integrated braking functions like ABS, stability control, and brake force distribution.
Safety Warning
Critical brake control functions including ABS, brake force distribution, and brake assist may fail or operate unpredictably, severely compromising braking performance and vehicle safety. Do not drive until repaired.
Common Causes
36%
Failed brake system control module with internal circuit or software corruption
26%
Defective brake pressure sensor or switch providing out-of-range values
22%
CAN bus wiring damage or poor connections disrupting data transmission
10%
Faulty brake fluid level sensor or pedal position sensor sending erratic signals
6%
Electrical system voltage issues causing module data corruption
Diagnostic Steps
1
Step 1: Check brake fluid level and condition; verify brake system physical operation is normal
2
Step 2: Inspect brake control module connectors for corrosion, moisture, or damaged pins
3
Step 3: Monitor brake pressure sensor and pedal position sensor data using scan tool during brake application
4
Step 4: Test CAN bus network integrity at brake module; verify proper voltage and termination resistance
5
Step 5: Perform brake module self-test or functional tests if available; update software or replace module if sensors test normal
Estimated Repair Cost
$300 - $2,000
Parts + labor, varies by vehicle and location
The brake system control module is transmitting invalid or corrupted data to other vehicle control modules. This affects integrated braking functions like ABS, stability control, and brake force distribution.
The most common cause of U0418 (Invalid Data Received From Brake System Control Module) is: Failed brake system control module with internal circuit or software corruption
Typical repair costs for U0418 range from $300 to $2,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Critical brake control functions including ABS, brake force distribution, and brake assist may fail or operate unpredictably, severely compromising braking performance and vehicle safety. Do not drive until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0418 to identify the root cause.
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Quick Info
Category
Network
System
Integrated Brake Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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