7E8 Engine Code

There are several possibilities when using an OBD scanner to examine engine issues. You will most likely encounter one or more of the difficulties listed in the code.

However, when the screen shows, codes such as 7E8 might leave you perplexed and unsure of what to do because they are so unusual!

Don’t be concerned! The most crucial information, as well as how to handle it, will be disclosed in the next parts!

What Is 7E8 Engine Code?

The 7E8 engine code is a general code that appears when there is an issue related to air or fuel intake in your car. It is often accompanied by the 7E9 error code, which signifies an issue in the engine data stream.

The 7E8 engine code is usually related to the emission system, particularly the loss of air pressure in the evaporative emission control system. The Check Engine light will turn on as a result of this issue. However, it could also indicate something else when it appears alongside the error code 7EA.


There are several common causes of the 7E8 engine code,

  • A broken fuel filler cap or a damaged FTPS (Fuel Tank Pressure Sensor).
  • A malfunctioning fuel filler cap can cause fuel to evaporate in the fuel tank and allow foreign materials and water to enter and contaminate the power.
  • A damaged FTPS can cause issues with regulating air pressure within the tank.

How To Fix 7E8 Engine Code?

Handling this engine code includes discovering the root cause and taking the appropriate steps. You should consider the following changes for the 7E8 engine code:

  • Repair any leaky, disconnected, or unplugged fuel vapour lines.
  • Replace any broken or missing gasoline filler caps.
  • Repair the damaged gasoline filler pipe.
  • A damaged gasoline canister should be replaced or repaired.
  • Repair or replace a faulty FTPS.
  • Repair or replace a faulty purge or pressure control solenoid valve.
  • If necessary, replace the fuel pump seals.

Also Read: What To Put In Gas Tank To Ruin Engine? All You Need To Know


The 7E8 engine code can be a tricky one to diagnose, but it’s important to address the issue as soon as possible to avoid further damage to your vehicle. If you’re not comfortable troubleshooting the problem yourself, take your car to a qualified mechanic.

Here are some tips for preventing the 7E8 engine code in the future:

  • Make sure your fuel filler cap is always tightly closed.
  • Replace your fuel filter regularly.
  • Inspect your fuel lines and fuel tank for any leaks or damage.
  • Keep your fuel tank at least half full.
  • Avoid driving with a low fuel tank.

By following these tips, you can help keep your engine running smoothly and prevent the 7E8 engine code from appearing. Stay tuned with Car Walls.

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I'm David, and I love cars - especially writing about them! I'm the owner of Carwalls.org, where I write car reviews and offer advice on car technical issues. My passion for cars started at a young age, when I would help my dad work on our family's vehicles. These days, I spend most of my time test-driving new models and researching the latest automotive technology. I'm always looking for a new challenge, so be sure to check out my website for the latest in car reviews and news. Thanks for reading!


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