P2638 OBD-II：扭矩管理反馈信号 "A "范围/性能 OBD-II故障代码P2638是什么意思？
OBD-II代码P2638定义为扭矩管理反馈信号 "A "范围/性能
变速器控制模块和发动机计算机（PCM）经常相互通信，以确保它们协同工作，产生所需的功率输出。 如果这两个模块不能相互通信，则设置代码P2638。
有此故障代码的车辆应送至修理厂进行诊断。 查找修理厂
P2638 症状
触发P2638代码的常见问题
- 动力总成控制模块（PCM）故障
- 变速箱控制模块（TCM）故障
- 接线问题
P2638代码所需的常见维修
Ronald Thomas
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