Q: Check engine light illuminted

Depending on the code received, you could either have separate problem or the O2 sensor code returned due to a misdiagnosis. The codes for O2 sensors can be from the engine running lean, rich, misfiring, or several other reasons. However, it is not caused by a problem with an O2 sensor itself. Have the computer扫描并查看是否返回相同的代码。如果确实如此，则应进行适当的诊断来解决真正的问题。我建议让一名合格技术人员为车辆提供服务，该技术人员拥有诊断您的工具和经验Check Engine Light。一旦解决问题，就可以进行适当的维修。