What Does U1228 Mean?
The network is not receiving valid tire pressure or tire information data on the SCP bus. This indicates communication loss between the tire pressure monitoring system (TPMS) receiver module and other vehicle modules.
Common Causes
35%
Failed TPMS receiver module or control unit
30%
Damaged wiring between TPMS module and SCP bus network
20%
Multiple TPMS sensor failures preventing data transmission
15%
Poor ground or power supply to TPMS receiver module
Diagnostic Steps
1
Step 1: Check if TPMS warning light is illuminated and scan for TPMS-specific codes
2
Step 2: Verify TPMS receiver module has proper power (12V) and ground (less than 0.5V)
3
Step 3: Test each TPMS sensor with activation tool to verify they're transmitting signals
4
Step 4: Inspect wiring and connector at TPMS receiver module for damage or corrosion
5
Step 5: Replace TPMS receiver module if all sensors are functioning and wiring is intact
Estimated Repair Cost
$100 - $600
Parts + labor, varies by vehicle and location
The network is not receiving valid tire pressure or tire information data on the SCP bus. This indicates communication loss between the tire pressure monitoring system (TPMS) receiver module and other vehicle modules.
The most common cause of U1228 (SCP (J1850) Invalid or Missing Data for Tires) is: Failed TPMS receiver module or control unit
Typical repair costs for U1228 range from $100 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of tire pressure monitoring can prevent detection of dangerous underinflation conditions. Manually check tire pressures regularly until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1228 to identify the root cause.
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Quick Info
Category
Network
System
Tire Pressure Monitoring System
Difficulty
Type
Manufacturer
Recommended Tools
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