参考含义
这个码是什么意思?
P0442 表示小泄漏,P0455 表示大泄漏,P0456 表示极小泄漏。检查适用车型的油箱盖密封、软管、阀门,并采用厂商检漏程序。油箱盖松动只是可能原因之一。不要在燃油蒸气附近使用压缩空气或明火自行测试。
来源与解读范围 [1]
故障码描述检测到的异常,不直接指定必须更换的零件。
限定车辆范围
车型关联可作为查阅线索;具体发动机、生产范围和软件条件请核对厂商资料。
更换零件之前
记录报码及冻结帧,检查蓄电池状态、相关报码和可见的线束或软管损伤。按照该车诊断流程和测试结果决定维修,避免仅凭故障码换件。
扫描记录表 →厂商原文中的含义
原文含义可能随车型和后缀变化。此处按来源展示,不代表通用诊断结论。
P0442EVAP SMALL LEAK
P0442EVAP SMALL LEAK
P0442EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK
厂商技术资料
278以下为英文原文
AUDI
This bulletin provides information when the fuel tank cap seal is leaking; DTC P044200, P045600 and/ or P00EF00 in stored in the ECM.
VOLKSWAGEN
Oil leak from Cylinder Head Cover; Customer states transmission error on dash/unable to move shifter out of park; Customer states MIL-on, P0456, P0442, or P04F0 stored in ECM memory; Customer states MIL-on; Customer states dynamic road sign assist error messages on instrument cluster and center display; Customer states wind nois…
VOLKSWAGEN
Oil leak from Cylinder Head Cover; Customer states transmission error on dash/unable to move shifter out of park; Customer states MIL-on, P0456, P0442, or P04F0 stored in ECM memory; Customer states MIL-on, fault P2080 present; Customer states MIL-on; Customer states dynamic road sign assist error messages on instrument cluster …
VOLKSWAGEN
Oil leak from Cylinder Head Cover; Customer states MIL-on, P0456, P0442, or P04F0 stored in ECM memory; Customer states MIL-on, fault P2080 present; Customer states MIL-on; Customer states various error messages on the cluster; Customer states dynamic road sign assist error messages on instrument cluster and center display; Cust…
核对适用车辆
3901车型关联可作为查阅线索;具体发动机、生产范围和软件条件请核对厂商资料。
来源与解读范围
以下解释由本站依据所列原厂资料整理。页码从 PDF 文件第一页计数。原文为英文,译文供查阅参考;引用某个版本不代表它就是厂商当前最新指令。
- 2024–2025 MY OBD System Operation Summary for Gasoline Engines ↗
Ford Motor Company · PDF 页码 11, 12 · 2024-04-16
来源核对日期 · 2026-10-27
还能继续驾驶吗?
仅靠故障码无法判断是否适合继续行驶。故障灯闪烁、严重抖动、过热、机油压力报警或制动转向异常都需及时处理。影响车辆控制或发动机安全时,应在安全地点停车并寻求帮助。以车辆手册为准。