Skip the auto shop - Our mechanics make house calls

Q: What does the loose fuel cap warning indicator mean?

asked by on

What does the loose fuel cap warning indicator mean?

Your Altima has a pretty advanced computer system capable of monitoring various systems and alerting you to problems. One of the most common issues with any vehicle is leaving the gas cap loose (or off completely). This allows fuel vapors to escape into the atmosphere, and triggers the car’s computer that something’s wrong with the evap system. If your vehicle information display is showing a loose fuel cap warning, remove and reinstall the gas cap. Once the system rechecks the evap pressure, the warning should go out.

Tip

If the gas cap has a bad seal, this warning can also be displayed but the cap will need to be replaced.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. What does the loose fuel cap warning indicator mean?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Starter relay location?

Hi, thanks for your question. This vehicle has an intelligent power distribution control module located behind right front headlight in engine compartment. This module is computer controlled and may require additional diagnostic testing. Hope this helps and best of luck!...

Q: How do I view the instant fuel econ?

The instant fuel econ displays the gas mileage that your car is achieving at any exact moment. To view this feature, follow these steps: 1. Press the Up/Down buttons on the steering wheel until Trip 1 or 2 is displayed...

Q: Should the "VDC" light be on or off? 2012 Nissan Xterra

Hi there - when the "VDC" light is illuminated on your dashboard, that means that Vehicle Dynamic Control is "OFF". It should be "ON" normally, so that it automatically steps in to reduce power when wheel spin is detected during...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.