What Does U0244 Mean?
The vehicle's communication network has lost contact with the primary running board control module. This affects the operation of power-deployable running boards and indicates a network or module fault.
Common Causes
35%
Damaged wiring or connector due to road debris or corrosion
25%
Failed Running Board Control Module A
20%
Physical damage to running board assembly affecting module
15%
Blown fuse or power supply fault to module
5%
CAN bus network fault or termination issue
Diagnostic Steps
1
Step 1: Check all fuses related to running board system and verify power and ground at running board control module A
2
Step 2: Inspect running board area for physical damage from road debris, impacts, or corrosion (modules often mounted under vehicle)
3
Step 3: Disconnect and inspect module connector for corrosion, moisture, or damaged pins
4
Step 4: Test CAN bus communication at module connector and verify network voltage and resistance values
5
Step 5: If wiring is intact, attempt to communicate with module using scan tool bidirectional controls; replace module if non-responsive
Estimated Repair Cost
$250 - $1,200
Parts + labor, varies by vehicle and location
The vehicle's communication network has lost contact with the primary running board control module. This affects the operation of power-deployable running boards and indicates a network or module fault.
The most common cause of U0244 (Lost Communication With Running Board Control Module "A") is: Damaged wiring or connector due to road debris or corrosion
Typical repair costs for U0244 range from $250 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Running boards may remain deployed or retracted, potentially creating a trip hazard or reducing ground clearance. Does not affect vehicle drivability.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0244 to identify the root cause.
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Quick Info
Category
Network
System
Running Board System / Communication Network
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
