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故障现象2012款奔驰C200车(底盘号为204,搭载271发动机),累计行驶里程约为1.4万km,出现燃油表指示不准的故障现象。故障诊断用故障检测仪进行诊断,发现发动机控制单元(ME)、后部信号采集及促动控制模组(SAM)及驻车系统(N62)中储存有故障代码;清除故障代码,发现SAM中的故障代码“P0460 1B——左侧燃油液位传感器存在故障,超出电阻极限值”无法清除;读取燃油液位传感器数据(图1),可知左侧燃油液位传感器电阻为2.65 1 kΩ,右侧燃油液位传感器电阻为193Ω。查看相关维修资料,得知左侧燃油液
Symptoms 2012 Mercedes Benz C200 (chassis number 204, equipped with 271 engines), the cumulative mileage of about 1.4 million km, there was no fuel gauge indicates the failure of the phenomenon. Fault diagnosis Diagnostics using a fault detector found that the engine control unit (ME), the rear signal acquisition and actuation control module (SAM) and the parking system (N62) stored in the fault code; clear the fault code and found SAM Fault code “P0460 1B - Left fuel level sensor is faulty, resistance limit exceeded” can not be cleared; Reading the fuel level sensor data (Figure 1) shows that the left fuel level sensor has a resistance of 2.65 1 kΩ, the right fuel level sensor resistance is 193Ω. See the relevant maintenance information, that the left side of the fuel liquid