What Does U0145 Mean?
Lost communication with Body Control Module 'E'. This represents a fifth body control zone, typically found only in large luxury vehicles or vehicles with extensive electronic systems.
Common Causes
35%
Body Control Module 'E' internal circuit board failure or software corruption
25%
Connector degradation at BCM 'E' (moisture intrusion, pin corrosion, poor contact)
20%
Network wiring fault between BCM 'E' and communication bus
15%
Power distribution or ground path problem affecting BCM 'E'
5%
Software mismatch or module configuration error
Diagnostic Steps
1
Step 1: Locate BCM 'E' using vehicle-specific service information and check all connector integrity
2
Step 2: Test BCM 'E' power and ground circuits for proper voltage and resistance values
3
Step 3: Verify CAN bus communication signals at BCM 'E' using multimeter or oscilloscope
4
Step 4: Attempt module communication using manufacturer diagnostic software and check for module identification
5
Step 5: Trace network wiring for breaks, shorts, or damaged insulation; verify proper bus termination
Estimated Repair Cost
$150 - $1,400
Parts + labor, varies by vehicle and location
Lost communication with Body Control Module 'E'. This represents a fifth body control zone, typically found only in large luxury vehicles or vehicles with extensive electronic systems.
The most common cause of U0145 (Lost Communication With Body Control Module "E") is: Body Control Module 'E' internal circuit board failure or software corruption
Typical repair costs for U0145 range from $150 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
BCM 'E' failure may affect auxiliary systems. Ensure critical safety systems like lighting, horns, and warning indicators function correctly before driving.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0145 to identify the root cause.
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Quick Info
Category
Network
System
Body Control Network - Zone E
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
