In a 2005 Lexus es330 How do you turn off the check engin...

Q: In a 2005 Lexus es330 How do you turn off the check engine light once fuel cap has been replaced and is on securely?

asked by on August 25, 2017

My check engine light came on so my husband and I took the car to autozone to see what was wrong, after the guy plugged the code machine thingy in he said the code that popped up stated that it was the gas cap not on securely but my husband had already tightened it before we got to autozone, so the worker told us if it doesn't go off after a few drives then the gas cap needs to be replaced. I bought a new gas cap and put it on today (8/25/2017) Do I need to turn the light off manually or should it go off automatically? If automatically how many drives is it going to take before it goes off? I've driven the car twice now and the light is still on. Please help.

My car has 167427 miles.

Hi there. Unfortunately, a plug & play code reader cannot determine the fault that has set the check engine light. The codes that the parts person pulled are most likely what are called evaporative emissions codes ( these codes pertain to the system that controls fuel vapors). This system includes all hoses and connections from the gas cap to the fuel tank to the engine. A proper diagnosis inspection is required to accurately diagnose the fault that caused the stored codes. When the engine computer detects a fault (a reading that is out of specifications) it stores a code and illuminates the check engine light. However, the computer does not know what caused the fault; it performs a test and the test failed. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a [check engine light inspection}(https://www.yourmechanic.com/services/check-engine-light-is-on-inspection).

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

Transmission lights no gears

Hello. Your BMW 745Li has a shutdown feature which helps to prevent additional damage to other components of the car when there is a problem with the engine and/or transmission. Using the information that you have provided, it sounds like...

Timing belt or chain how much to replace. Buying used not sure if it done

The RX350 has a timing chain which does not need replacement. While the timing chain does not have a service interval per se, timing chain engines such as this have longer term maintenance requirements in that the timing chain tensioner...

Rough idle, thermostat code

I'm guessing the codes is P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature). The code and the symptoms you are experiencing may or may not be related. The powertrain control module (PCM) determines operating temperature via the signal from...

Related articles

Top 10 Factors to Consider When Buying a Luxury Car
The The idea of owning a luxury car is appealing. The glossy paint, swoopy lines, and prestigious badges speak of the owner’s success in life, while the interior opulence offers scented leather surfaces, high-tech telematic devices, and all the creature-comfort...
Understanding the Lexus Oil Life Monitor Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Lexus Oil Life Monitor (OLM) indicates when and what service your car needs.
2005 Kia Sorento vs. 2005 Chevrolet Blazer: Which One Should I Buy?
SUVs are great for playing out in the mud, taking kids and friends around to different places, as well as just running errands around town. While they are not known to be terrific for gas mileage, that problem is negated...