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

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
  1. Home
  2. Questions
  3. In a 2005 Lexus es330 How do you turn off the check engine light once fuel cap has been replaced and is on securely?

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: Car stopped while driving and won't start even with a jump.

Hello, thank you for writing in. The starter would not prevent the vehicle from driving. Once it is used to turn over the engine when starting, it is useless to the vehicle. It is more likely a battery or alternator...

Q: Intermittent steering wheel shaking

It sounds to me like the wheels are out of balance. This may be because of a bent rim, or simply because the wheels weren't balanced properly when you had the tires replaced. Most tire and wheel imbalance problems make...

Q: When should I replace the timing belt on my 2006 Lexus ES330

Hi there. Lexus recommends replacing the timing belt at 90,000 to 100,000 miles. It appears as if you're vehicle is due to have this service completed, so if you'd like an estimate to have a professional mobile mechanic complete the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.