CC
CarCodeFix
U0101Low Priority

Lost Communication with TCM

Category: Network• CAN Communication

3 articles · 2 makes affected

What is U0101?

Lost Communication with TCM (Transmission Control Module). The network cannot communicate with the transmission control module.

Symptoms You May Notice

  • ●Check engine light
  • ●Transmission stuck in gear
  • ●Limp mode
  • ●No shifting
  • ●Speedometer not working

How to Fix It

  • ●Check TCM fuses ($10-$50, beginner)
  • ●Repair CAN bus wiring ($150-$500, professional)
  • ●Replace TCM ($500-$1500, professional)
  • ●Reprogram TCM ($150-$400, professional)

Owner Statistics

Based on 508 real owner discussions • 54 confirmed solutions

Dataset (508 records)
$1,842
Average Repair Cost
11%
Success Rate
6%
DIY Repairs
508
Data Sources

About This Data

Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.

Frequently Appears With

These codes often appear together in owner reports. Check these if you see U0101.

Based on analysis of 14 owner reports where multiple codes appeared together.

Issues by Vehicle