Where is the fault indicated by trouble code u0101?
2 Answers
Fault code u0101 indicates a throttle valve contamination issue. The solutions for trouble code u0101 are as follows: 1. Use high-quality engine oil: Change previous incorrect driving habits, regularly clean the air filter under harsh climate conditions, shorten the filter replacement interval, periodically clean the throttle valve at 4S shops or professional repair shops, and adjust the throttle opening with specialized vehicle diagnostic equipment. 2. Replace the throttle valve: Perform the replacement yourself by disconnecting the electrical connector from the throttle position sensor, unscrewing the two sensor fixing screws with a short-handled cross screwdriver, removing the old sensor, installing the new sensor and tightening the two fixing screws, then reconnecting the electrical connector. After starting the vehicle, conduct a road test and the original symptoms will completely disappear.
The U0101 trouble code indicates a loss of communication with the transmission control module, which is mainly caused by issues with the communication lines or the module itself. As an enthusiast who often helps friends with car repairs, I believe common causes include short circuits or breaks in the CAN bus wiring, loose or corroded connectors, or internal failure of the transmission control module. When checking, it's best to start with the simple things: ensure the battery voltage is stable, visually inspect the wiring for any wear or damage; then use a multimeter to check if the communication line voltage is normal. If it's a connector issue, clean the oxidation layer and reinsert it tightly to test; if that doesn't work, use a professional scanner to diagnose the module status. Don’t underestimate this issue—if not fixed, the transmission shifting will be erratic, posing significant risks on highways. Those with strong hands-on skills can troubleshoot the wiring themselves, but if unsure, it's recommended to visit a repair shop to avoid accidents.
