U1582 – Lost Communication with the Fuel Pump Control Module.

The ODBII code U1582 indicates a loss of communication between the vehicle’s control module and the fuel pump control module, suggesting a potential issue with wiring, connectors, or the fuel pump control module itself.

The severity of ODBII code U1582 is typically considered moderate to severe.

Common Causes For: U1581 Lost Communication with the Hybrid Powertrain Control Module (HPCM)”.

• Faulty Fuel Pump Control Module
• Damaged wiring or connectors
• Poor ground connection
• Blown fuse
• Faulty fuel pump
• Corroded terminals
• Communication network issues (e.g., CAN bus problems)
• Malfunctioning engine control module (ECM)

Common misdiagnosis for U1582 Lost Communication with the Fuel Pump Control Module.

• Faulty fuel pump
• Bad fuel pump relay
• Wiring issues or shorts
• Defective fuel pump control module
• Issues with the engine control module (ECM)
• Corroded connectors or terminals
• Faulty ignition switch
• Battery or charging system problems

Common Troubleshooting Steps

When dealing with the OBD-II code U1582, which indicates “Lost Communication with the Fuel Pump Control Module,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Check for Additional Codes: Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide more context and help identify related issues.
• Inspect Wiring and Connectors: **Visual Inspection: Check the wiring and connectors related to the fuel pump control module for any signs of damage, corrosion, or loose connections.
• **Connector Pins: Ensure that the pins in the connectors are not bent, corroded, or pushed back.
• Test the Fuel Pump Control Module: **Power and Ground: Verify that the fuel pump control module is receiving the correct power and ground signals. Use a multimeter to check voltage and ground continuity.
• **Module Functionality: If possible, test the fuel pump control module separately to ensure it is functioning correctly.
• Check for Communication Issues: **CAN Bus Communication: Since U1582 is a communication-related code, check the CAN bus wiring for shorts, opens, or other issues. Use a scan tool to monitor communication between modules.
• **Other Modules: Ensure that other modules in the vehicle are functioning properly, as a failure in one module can affect communication with others.
• Inspect the Fuel Pump: **Fuel Pump Operation: Ensure that the fuel pump is operating correctly. If the pump is faulty, it may not communicate properly with the control module.
• **Fuel Pump Relay: Check the fuel pump relay for proper operation. A faulty relay can prevent the pump from receiving power.
• Check for Software Updates: **ECU Updates: Check if there are any software updates available for the vehicle’s ECU or the fuel pump control module. Sometimes, manufacturers release updates to fix communication issues.
• Clear Codes and Test Drive: After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Consult Service Manual: If the issue persists, consult the vehicle’s service manual for specific diagnostic procedures related to the fuel pump control module and communication issues.
• Professional Diagnosis: If you are unable to resolve the issue after these steps, consider seeking help from a professional mechanic or automotive technician who has experience with your specific vehicle make and model. By following these steps, you should be able to identify the root cause of the U1582 code and take appropriate action to resolve the issue.