What Does U1430 Mean?
The control module is not receiving valid fuel system data over the SCP (J1850) network from the powertrain control module. This prevents other modules from coordinating their functions with current fuel system status.
Common Causes
35%
SCP communication network fault interrupting fuel system data messages from PCM
30%
PCM internal fault or software corruption preventing fuel system data broadcasting
20%
Fuel system sensor faults causing PCM to invalidate fuel system data messages
15%
Corroded or loose PCM connector affecting data transmission quality
Diagnostic Steps
1
Step 1: Check for fuel system related P-codes that may indicate why PCM is not broadcasting valid fuel data
2
Step 2: Verify PCM communication on the network and check for additional U-codes indicating network problems
3
Step 3: Monitor fuel system parameters on scan tool to verify PCM is calculating fuel system status internally
4
Step 4: Inspect PCM connectors for corrosion, damage, or loose terminal fit
5
Step 5: Check for PCM software updates or calibration issues that may affect fuel system data broadcasting
Estimated Repair Cost
$100 - $1,200
Parts + labor, varies by vehicle and location
The control module is not receiving valid fuel system data over the SCP (J1850) network from the powertrain control module. This prevents other modules from coordinating their functions with current fuel system status.
The most common cause of U1430 (SCP (J1850) Invalid or Missing Data for Function Read Fuel System) is: SCP communication network fault interrupting fuel system data messages from PCM
Typical repair costs for U1430 range from $100 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of fuel system data may affect emissions systems, transmission shift quality, and fuel economy. Vehicle should be driveable but may experience performance issues or increased emissions.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1430 to identify the root cause.
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Quick Info
Category
Network
System
Network Communications / Fuel System
Difficulty
Type
Manufacturer
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