What Does U0552 Mean?
The control module receiving data has detected that messages from Running Board Control Module B are corrupted, missing expected parameters, or contain values outside normal ranges. This indicates a communication fault on the vehicle's data network affecting the secondary running board controller.
Common Causes
35%
Faulty Running Board Control Module B with internal circuit failure or software corruption
30%
Damaged or corroded wiring harness between modules causing signal degradation
20%
Poor ground connection at running board module causing voltage reference issues
10%
Faulty receiving control module misinterpreting valid data
5%
Low voltage condition or weak battery affecting module operation
Diagnostic Steps
1
Step 1: Monitor live data stream from Running Board Control Module B to verify if data is being transmitted and observe values for anomalies
2
Step 2: Inspect Running Board Control Module B connectors for corrosion, bent pins, moisture intrusion, and ensure secure connection
3
Step 3: Use multimeter to test power supply and ground circuits at Running Board Control Module B, verify voltage is within specification (typically 12-14V)
4
Step 4: Perform resistance and continuity tests on CAN bus high and low signal wires between Running Board Module B and receiving module
5
Step 5: If wiring and power are confirmed good, substitute Running Board Control Module B with known-good unit or reflash module software if available
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The control module receiving data has detected that messages from Running Board Control Module B are corrupted, missing expected parameters, or contain values outside normal ranges. This indicates a communication fault on the vehicle's data network affecting the secondary running board controller.
The most common cause of U0552 (Invalid Data Received From Running Board Control Module "B") is: Faulty Running Board Control Module B with internal circuit failure or software corruption
Typical repair costs for U0552 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Running boards may not deploy or retract properly, creating a trip hazard or preventing vehicle entry/exit. Vehicle is safe to drive but convenience features will be impaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0552 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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