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。
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 LEAKP0442EVAP SMALL LEAKP0442EVAPORATIVE EMISSION (EVAP) SYSTEM LEAKP0442EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK厂商技术资料
278以下为英文原文
AUDI
原文报码 P044200
This bulletin provides information when the fuel tank cap seal is leaking; DTC P044200, P045600 and/ or P00EF00 in stored in the ECM.
VOLKSWAGEN
原文报码 P0442
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…
VOLKSWAGEN
原文报码 P0442
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…
VOLKSWAGEN
原文报码 P0442
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…
VOLKSWAGEN
原文报码 P0442
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…
VOLKSWAGEN
原文报码 P0442
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…
核对适用车辆
3,901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。
| 品牌 | 车型 | 年款 |
|---|---|---|
| Audi | A3 | 2026 |
| Audi | A3 | 2025 |
| Audi | A3 | 2024 |
| Audi | A3 | 2023 |
| Audi | A3 | 2020 |
| Audi | A3 | 2019 |
| Audi | A3 | 2018 |
| Audi | A3 | 2017 |
| Audi | A3 ETRON | 2015 |
| Audi | A3 SPORTBACK E-TRON | 2018 |
| Audi | A3 SPORTBACK E-TRON | 2017 |
| Audi | A3 SPORTBACK E-TRON | 2016 |
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。
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 ·
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。