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: Please help My car just stopped accelerating in drive and in reverse what is the problem?

If your vehicle will no longer apply engine power to the wheels while in forward or reverse gear, the transmission will most likely be the cause of this issue. It is possible that this issue is computer, hydraulic, or mechanical...

Q: brake pedal position sensor malfunction came up as a code PO120 since the check engine light was on my 2002 Lexus GS300.

Trouble code P0120 relates primarily to malfunctions in the throttle position sensor, located in the throttle body, and/or circuitry and wiring to the sensor. Standard practice is to measure the voltage leaving the sensor at various throttle plate angles (the...

Q: Ball joints replacement, dash lights came on

The code that you are describing goes to the right front speed sensor. I cannot assume that the last repair you've done damaged the sensor or it just went bad. I would have the front right sensor inspected to see...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...