What are the reasons why an automatic transmission car does not move when shifted to D gear?
1 Answers
Automatic transmission cars may not move after shifting to D gear due to the following reasons: 1. The transmission shift valve position sensor signal is incorrect, making it unable to detect the current gear; 2. The shift valve is malfunctioning, causing incomplete gear engagement and failure to open the oil passage; 3. The transmission solenoid valve or electronic module is faulty; 4. Insufficient transmission fluid or low internal oil pressure; 5. Brake lock-up preventing the wheels from moving forward, accompanied by abnormal noise when accelerating; 6. The handbrake is not fully released or not disengaged completely.