What Does U0226 Mean?
The vehicle's communication network has lost contact with Door Window Motor E, typically indicating the third row or cargo area window motor module. This means the control module cannot send or receive data from this specific window motor controller.
Common Causes
35%
Faulty window motor module or internal controller failure
30%
Damaged or corroded wiring harness or connector to window motor E
20%
Poor ground connection at window motor module
10%
Blown fuse or open circuit in power supply to window motor module
5%
Body Control Module (BCM) communication circuit failure
Diagnostic Steps
1
Step 1: Verify fuse integrity for window motor E circuit and check for power at the module connector
2
Step 2: Inspect wiring harness and connector at window motor E for damage, corrosion, or loose pins
3
Step 3: Test ground circuit continuity from window motor module to chassis ground
4
Step 4: Use scan tool to attempt communication with window motor E module and check for voltage on CAN bus lines
5
Step 5: Swap window motor E module with a known good unit or another window motor to isolate module failure
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The vehicle's communication network has lost contact with Door Window Motor E, typically indicating the third row or cargo area window motor module. This means the control module cannot send or receive data from this specific window motor controller.
The most common cause of U0226 (Lost Communication With "Door Window Motor E") is: Faulty window motor module or internal controller failure
Typical repair costs for U0226 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No direct safety impact, but window operation may be compromised. May affect emergency egress through affected window.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0226 to identify the root cause.
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Quick Info
Category
Network
System
Body Control and Convenience
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
