How to check the fuel cap on a Nissan?
As you can see in the ladder diagram from the Nissan service manual, action step 1A is to check the fuel cap. By popular demand I added a common evap system electrical diagram at the bottom.
What to do if service engine soon does not go off?
If the light does not go off, try buying and installing a new gas cap. They cost less than $10 at your local car parts retailer. It is worth ruling out this common problem before proceeding to bring in the vehicle for an expensive service call. It Wasn’t the Gas Cap? Uh-oh!
Why is my gas cap not sealing O-ring?
gas cap sealing o-ring If the rubber seal on the fuel cap isn’t sealing, because the cap is loose or cross threaded, the test fails. The pump never reaches its desired pressure and therefore triggers the service engine soon light.
Is it possible to clear a gas cap code?
Often gas caps are made of several parts even if they look one piece. Thankfully, they make inexpensive scan tools that just read and clear codes. Plus here is a link to popular replacement gas caps. If you want to try replacing the cap and clearing the codes I think its worth a try.
What happens when you replace a gas cap?
There are a number of different types of gas caps out there and selecting the right replacement will take some time and effort on your part. When a gas cap is in need of replacement, here are some of the things that you may notice: Putting a new gas cap on a car will help to reduce the amount of trash that is allowed to get into your fuel supply.
Why does the gas cap light come on but not the Check Engine light?
If there is any abnormal wear or damage to it, even a new gas cap may not seal properly. It can also be possible that there is an EVAP system leak or fault even though the check engine light is not on or an EVAP system leak fault present.
If the light does not go off, try buying and installing a new gas cap. They cost less than $10 at your local car parts retailer. It is worth ruling out this common problem before proceeding to bring in the vehicle for an expensive service call. It Wasn’t the Gas Cap? Uh-oh!
As you can see in the ladder diagram from the Nissan service manual, action step 1A is to check the fuel cap. By popular demand I added a common evap system electrical diagram at the bottom.