how to troubleshoot my Ram 1500 DT (2019-Present) with code U1000

• •Check engine light illuminated
• •Intermittent or complete loss of communication with various modules
• •Inconsistent operation of electronic features (e.g., lights, infotainment, etc.)
• •Potential issues with starting the vehicle
• •Diagnostic scanner unable to communicate with certain modules

1. 1Scan for error codes using an OBD-II scanner to confirm U1000 and check for any additional codes.
2. 2Inspect the vehicle's wiring harnesses and connectors for physical damage, corrosion, or loose connections.
3. 3Check the vehicle's battery voltage and ground connections; ensure they are within specifications (12.4V to 12.7V with the engine off).
4. 4Use a multimeter to test the continuity of the CAN bus wiring between the modules.
5. 5Inspect fuses related to the communication network (e.g., fuses for the body control module, engine control module).
6. 6Review TSBs (Technical Service Bulletins) for any known issues related to the U1000 code specific to Ram 1500 DT.

After completing the repair, verify that the issue has been resolved:

• ✓Test the affected component to ensure it functions correctly
• ✓Check for any error codes or warning lights
• ✓Monitor the vehicle for a few days to ensure the issue does not recur

To prevent this issue from occurring again:

• •Follow the manufacturer's recommended maintenance schedule
• •Address warning signs early before they develop into major issues
• •Use quality parts and fluids recommended for your vehicle
• •Keep detailed records of all repairs and maintenance

• •OBD-II scanner
• •Multimeter
• •Socket set
• •Wire strippers/crimpers
• •Electrical contact cleaner

• •Replacement wiring (if damaged)
• •Replacement fuses (if blown)