车型:奥迪A4L,配置2.0T发动机。VIN:LFV3A28K7D3××××××。行驶里程:31520km。故障现象:仪表侧滑灯和电动转向机故障灯常亮。故障诊断:诊断仪检查多个控制单元有故障码:U111300由于接收到错误数值而功能受限;U021200失去与转向柱控制单元的通信,无通信,主动/静态;U012600转向角传感器无通信等相关故障。车辆可以打开点火开关并启动,但诊断仪显示点火开关没有打开。诊断仪一直显示点火开关没有 Model: Audi A4L, equipped with 2.0T engine. VIN: LFV3A28K7D3 ××××××. Mileage: 31520km. Symptom: Instrument side slip light and electric steering machine fault light is always on. Fault diagnosis: The diagnostic tester checks multiple control units. Fault code: U111300 Function limited due to error value received; U021200 Lost communication with steering column control unit, no communication, active / static; U012600 Steering angle sensor not relevant for communication malfunction. The vehicle can turn the ignition switch on and on, but the diagnostic display shows that the ignition switch is not on. The diagnostic unit always shows that the ignition is off