B212412 - TroubleshootingB212412-故障诊断

Fault code description故障码说明

DTC故障码(DTC)	Fault code description故障码描述	Possible cause of failure可能故障原因
B212412	The sensor on the rear left side is faulty and the circuit is short-circuited.后左侧传感器存在故障，电路对电短路	1. The signal line is short-circuited to the power supply or has no ground, or there is poor contact.1.信号线短路到电源或无地，或存在接触不良的情况

Troubleshooting steps故障诊断步骤

①Power on check上电检查

1. Repower the vehicle, use the diagnostic tool to read and clear the fault codes, and check whether the fault codes and symptoms are eliminated.车辆重新上电，使用诊断仪读取并清除故障码，检查故障码及症状是否排除。 Are the test results normal?检查结果是否正常？ Yes是 Fault resolved.故障排除。 No否 Go to step 2.去步骤2。

②Replace the parking sensor controller更换倒车雷达控制器

1. Replace the parking sensor controller with a new one and check whether the fault code and symptoms are eliminated.更换新的倒车雷达控制器，检查故障码及症状是否排除。 Are the test results normal?检查结果是否正常？ Yes是 Fault resolved.故障排除。 No否 Look for causes from other symptoms.从其他症状查找原因。   Caution:注意： ♦  After replacing the parking sensor controller, you need to use a diagnostic tool to recalibrate the parking sensor controller.更换倒车雷达控制器后，需用诊断仪对倒车雷达控制器重新标定。