P0304 OBD-II故障代码:检测到缸4失火

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诊断P0304代码的成本

P0304是“检测到的气缸4失火”的诊断故障代码(DTC)。这可能是出于多种原因而发生的,并且机械师需要诊断在您的情况下触发此代码的具体原因。我们经过认证的移动机制可以来您的家庭或办公万博亚洲客户端室执行检查引擎灯diagnosticfor $114.99。一旦我们能够诊断出该问题,就会为您提供建议的修复程序的前期报价,并获得20.0美元的折扣作为维修的信用。我们所有的维修都得到了我们12个月 / 12,000英里的保修。

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P0304code definition

P0304是当诊断性故障代码在气缸4中检测到失火。This code may be seen with other misfire codes and lean / rich codes.

What the P0304 code means

P0304代码将在ECU检测到气缸4射击的汽车中看到。ECU监视所有圆柱体的操作,以确保它们都按时射击,因此,当一个反射反射时,设置了检查引擎灯。

是什么原因导致P0304代码?

  • 火花塞的故障
  • Faulty plug wires, cap and rotor, and/or coil pack
  • Mechanical engine issue
  • 进气泄漏
  • Fuel issues

What are the symptoms of the P0304 code?

  • Engine running poorly or having trouble staying running
  • 检查引擎灯出席
  • Misfires
  • Lack of engine power
  • Decreased fuel mileage

How does a mechanic diagnose the P0304 code?

  • The mechanic will begin by hooking up a scan tool to the DLC port to determine which codes are present.

  • Freeze frame data will be associated with every code found and should be noted for use on the test drive.

  • The codes will now be cleared and a road test performed under similar conditions to the freeze frame data from earlier.

  • Next, a visual inspection will be performed looking for damaged wires, worn or broken components, or visible leaks.

  • 接下来,扫描工具将用于监视气缸4的失火计数器。

  • Then, the scan tool will be used to look at the long-term fuel trims to see if fuel issues are present and the intake air pressure checked to see if vacuum leaks are present.

诊断P0304代码时常见错误

Mistakes can be made when components are not tested or when unnecessary components are replaced. To avoid this, follow all steps without skipping any. Replacing the spark plugs and wires fixes this issue for most vehicles. However, the entire system must be tested before determining what to repair.

P0304代码有多严重?

症状开始后,P0304不应阻止车辆被驱动到安全位置。由于有可能与此代码相关的可驾驶性问题,因此建议将其尽快维修以进行安全车辆操作。

哪些维修可以修复P0304代码?

Additional comments for consideration regarding the P0304 code

配备较高里程的线圈包装可能会遇到线圈背包故障。测试线圈本身是否有故障的一种简单方法是将可疑线圈包移至另一个圆柱体。然后测试车辆以查看代码是否更改为新圆柱体。如果是这样,则线圈包本身已经失败。

根据年的不同,车辆将配备有稍旧一点的最现代,火花塞线的线圈包,或者通常在化油器上使用的分配器盖和转子。所有这些都被认为是磨损物品,并且容易在更高的里程车辆上故障。火花塞线,盖和转子通常是在常规间隔内与火花塞一起替换的项目。

将需要一个高级扫描工具来正确诊断P0304-不仅仅读取代码,而且可以访问实时引擎数据。需要此数据来跟踪失火并查看燃料和进气信息。

Need help with a P0304 code?

万博体育入口Mymechanic提供认证的移动机制,他们将来您的家或办公室万博亚洲客户端诊断和维修您的车辆。Get a quote and book an appointment online或致电1-800-701-6230与服务顾问交谈。

检查引擎灯
P0304
故障代码

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