What Does U0446 Mean?
The receiving module has detected that Body Control Module 'E' is transmitting data on the communication network, but the data received is invalid, corrupted, or contains values that fail validation checks. Communication is present but data integrity is compromised.
Common Causes
35%
Outdated or corrupted firmware/software in Body Control Module E
30%
Poor connection quality, corrosion, or damaged pins at BCM E connector
20%
Failing Body Control Module E with internal hardware defects
10%
CAN bus signal degradation due to improper termination or short to power/ground
5%
Electrical noise from high-current devices affecting data integrity on network
Diagnostic Steps
1
Step 1: Use enhanced diagnostics to view specific data parameters from BCM E that are triggering invalid data fault
2
Step 2: Research manufacturer-specific information about BCM E location, function, and common failure modes
3
Step 3: Perform visual inspection of BCM E and its connector; check for water intrusion or physical damage
4
Step 4: Measure voltage stability at BCM E power supply during various load conditions
5
Step 5: Update BCM E software to latest version; replace module if update fails or hardware fault confirmed
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The receiving module has detected that Body Control Module 'E' is transmitting data on the communication network, but the data received is invalid, corrupted, or contains values that fail validation checks. Communication is present but data integrity is compromised.
The most common cause of U0446 (Invalid Data Received From Body Control Module "E") is: Outdated or corrupted firmware/software in Body Control Module E
Typical repair costs for U0446 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May result in malfunctioning body systems such as lighting, door functions, or accessory controls. Usually not immediately hazardous but should be addressed to maintain full vehicle functionality.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0446 to identify the root cause.
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Quick Info
Category
Network
System
Body Control Network
Difficulty
Type
Generic (SAE)
Recommended Tools
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