沃尔沃S90发动机排气系统故障诊断
中图分类号：U464.134 文献标识码：B 文章编号：1003-8639（2025)07-0193-02
Volvo S9o Engine Exhaust System Fault Diagnosis
Hu Zhengquan
(Fuyang Technician Institute，Fuyang 236OO1，China)
【Abstract】Asa high-end luxury sedan，the stabilityand reliabilityof thepowersystem ofthe Volvo S9O are of vitalimportance.Thisarticleaims toexplore thecommon causesof the exhaust system fault lighton the Volvo S90 engine andpropose corresponding diagnosticmethods.Providevaluable references for Volvo S9O ownersand maintenance personnel，helping them diagnoseand solve engine exhaustsystem faultsmoreefectively，therebyenhancing the vehicle'sperformance and environmental friendliness.
【Key words】Volvo S9O；exhaust system； fault light；oxygen sensor; three-way catalytic converter；EGR
0 引言
随着汽车工业的快速发展，汽车的复杂性和智能化程度不断提高，消费者对车辆性能、安全性和环保性的要求也日益提升。（剩余3272字）