U0555: Invalid Data Received From Remote Start Module

Definition

The OBD2 code U0555 indicates that the vehicle's control module has received invalid or corrupted data from the remote start module

Common causes

Faulty remote start module
Poor or damaged wiring connections
Corrupted software or firmware in the remote start module
Communication issues between modules
Low battery voltage or weak battery
Interference from aftermarket accessories
Faulty vehicle control module (VCM) or body control module (BCM)

Common misdiagnoses

Faulty Remote Start Module
Wiring Issues
Faulty Body Control Module (BCM)
Software Glitches
Communication Network Problems
Battery Voltage Issues
Faulty Key Fob
Incorrectly Installed Aftermarket Remote Start System

Troubleshooting steps

1. Check for Additional Codes

Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide additional context for the problem
2. Inspect Wiring and Connectors
3. Visually inspect the wiring and connectors associated with the Remote Start Module. Look for signs of damage, corrosion, or loose connections
4. Ensure that all connectors are securely plugged in and that there are no broken wires
5. Check the Remote Start Module
6. If the wiring appears to be in good condition, the Remote Start Module itself may be faulty
7. If possible, test the module with a known good unit or perform a bench test to verify its functionality
8. Inspect the Vehicle’s Battery and Charging System
9. A weak or failing battery can cause communication issues between modules. Ensure the battery is fully charged and in good condition
10. Check the alternator and charging system to ensure they are functioning properly
11. Perform a Software Update
12. Some vehicles may require a software update for the Remote Start Module or the vehicle’s main control module. Check with the manufacturer or a dealership for any available updates
13. Clear Codes and Test Drive
14. After performing any repairs or inspections, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns
15. Check for Interference
16. If the vehicle has aftermarket accessories or modifications, ensure that they are not interfering with the Remote Start Module’s operation
17. Consult Technical Service Bulletins (TSBs)
18. Check for any TSBs related to the U0555 code for your specific vehicle make and model. Manufacturers may have issued guidance on common issues and fixes
19. Seek Professional Help
20. If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or dealership for further diagnosis and repair. By following these steps, you should be able to identify and resolve the issue related to the U0555 code

Definition

Common causes

Common misdiagnoses

Troubleshooting steps

1. Check for Additional Codes

2. Inspect Wiring and Connectors

3. Visually inspect the wiring and connectors associated with the Remote Start Module. Look for signs of damage, corrosion, or loose connections

4. Ensure that all connectors are securely plugged in and that there are no broken wires

5. Check the Remote Start Module

6. If the wiring appears to be in good condition, the Remote Start Module itself may be faulty

7. If possible, test the module with a known good unit or perform a bench test to verify its functionality

8. Inspect the Vehicle’s Battery and Charging System

9. A weak or failing battery can cause communication issues between modules. Ensure the battery is fully charged and in good condition

10. Check the alternator and charging system to ensure they are functioning properly

11. Perform a Software Update

12. Some vehicles may require a software update for the Remote Start Module or the vehicle’s main control module. Check with the manufacturer or a dealership for any available updates

13. Clear Codes and Test Drive

14. After performing any repairs or inspections, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

15. Check for Interference

16. If the vehicle has aftermarket accessories or modifications, ensure that they are not interfering with the Remote Start Module’s operation

17. Consult Technical Service Bulletins (TSBs)

18. Check for any TSBs related to the U0555 code for your specific vehicle make and model. Manufacturers may have issued guidance on common issues and fixes

19. Seek Professional Help

20. If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or dealership for further diagnosis and repair. By following these steps, you should be able to identify and resolve the issue related to the U0555 code