U2713 – refers to a communication issue related to the transmission control module (TCM) in a vehicle.
The ODBII code U2713 indicates a communication issue between the transmission control module (TCM) and other control modules in the vehicle, suggesting a potential fault in the data transmission or connection.
The severity of OBDII code U2713 is generally considered moderate to high.
Common Causes For: U2712 U2712: Transmission Control Module Communication Error
- Faulty Transmission Control Module (TCM)
- Damaged or corroded wiring/connectors
- Poor ground connection
- Failed or malfunctioning sensors (e.g., speed sensors)
- Software issues or outdated firmware
- Issues with the vehicle’s power supply
- Faulty transmission components
- Intermittent electrical connections
Common misdiagnosis for U2713 refers to a communication issue related to the transmission control module (TCM) in a vehicle.
- Faulty Transmission Control Module (TCM)
- Wiring issues or damaged connectors
- Faulty Transmission Range Sensor
- Low transmission fluid levels
- Faulty Engine Control Module (ECM)
- Incorrectly calibrated or programmed TCM
- Faulty vehicle speed sensor
- Issues with the CAN bus system
- Faulty or corroded ground connections
- Malfunctioning transmission solenoids
Common Troubleshooting Steps
When dealing with OBD-II code U2713, which indicates a communication issue related to the Transmission Control Module (TCM), 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 related trouble codes. This can provide more context and help identify if there are other issues affecting the TCM.
- Inspect Wiring and Connectors: **Visual Inspection: Check the wiring harness and connectors related to the TCM for any signs of damage, corrosion, or loose connections.
- **Connector Pins: Ensure that the pins in the connectors are not bent, corroded, or damaged.
- Check Power and Ground: **Power Supply: Verify that the TCM is receiving the correct voltage. Use a multimeter to check the power supply to the TCM.
- **Ground Connections: Ensure that the ground connections for the TCM are secure and free of corrosion.
- Inspect the TCM: **Physical Condition: Check the TCM for any signs of physical damage or water intrusion.
- **Reprogramming: If applicable, consider reprogramming or updating the TCM software, as a software glitch can sometimes cause communication issues.
- Scan for Communication Issues: **CAN Bus Communication: Use a scan tool to check the communication on the CAN bus. Ensure that the TCM is communicating with other modules (like the Engine Control Module).
- **Bus Voltage: Measure the voltage on the CAN bus to ensure it is within the expected range.
- Check for Intermittent Issues: **Wiggle Test: While monitoring the TCM communication, perform a wiggle test on the wiring harness to see if the communication drops out, indicating a possible intermittent connection issue.
- Test the TCM: If all other checks are satisfactory, consider testing the TCM itself. This may involve swapping it with a known good unit if available.
- Consult Technical Service Bulletins (TSBs): Look for any TSBs related to the specific make and model of the vehicle. Manufacturers may have issued guidance on common issues related to the TCM.
- Professional Diagnosis: If the issue persists after performing the above steps, it may be necessary to consult a professional mechanic or dealership for further diagnosis. They may have specialized tools and knowledge to address complex issues.
- Clear Codes and Test Drive: After performing repairs or adjustments, clear the codes and take the vehicle for a test drive to see if the code returns. By following these steps, you can systematically diagnose and address the communication issue related to the TCM indicated by the U2713 code.