What Does U1227 Mean?
Duplicate of U1226 indicating persistent or additional body status request communication failures. Multiple occurrences suggest systemic network issues or multiple module involvement.
Common Causes
35%
Intermittent connection in SCP bus network causing repeated dropouts
30%
Body control module intermittent failure
20%
Multiple body sensors or switches failing simultaneously
15%
Power or ground issue affecting body control system
Diagnostic Steps
1
Step 1: Wiggle test all connectors in SCP network while monitoring for code reset or symptoms
2
Step 2: Check for technical service bulletins related to body control network issues
3
Step 3: Test all body sensors and switches individually for proper voltage output
4
Step 4: Verify all ground points for BCM and related modules have less than 0.1 ohm resistance
5
Step 5: Monitor SCP bus communication during vehicle operation to identify intermittent failures
Estimated Repair Cost
$150 - $1,000
Parts + labor, varies by vehicle and location
Duplicate of U1226 indicating persistent or additional body status request communication failures. Multiple occurrences suggest systemic network issues or multiple module involvement.
The most common cause of U1227 (SCP (J1850) Invalid or Missing Data for Body Status Request) is: Intermittent connection in SCP bus network causing repeated dropouts
Typical repair costs for U1227 range from $150 to $1,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Intermittent warnings or lighting issues may occur. Vehicle remains safe to operate but should be diagnosed to prevent complete system failure.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1227 to identify the root cause.
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Quick Info
Category
Network
System
Body Control Network
Difficulty
Type
Manufacturer
Recommended Tools
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