Skip the auto shop - Our mechanics make house calls

Q: Engine light goes on and off

asked by on

Car engine light keeps going on and then off after I drive my car for couple hours.

My car has 95000 miles.
My car has an automatic transmission.

A: Usually there are two instances where we se...

Usually there are two instances where we see a check engine light appear on and off as you describe the first involves the Check Engine Light coming on and staying lit. The vehicle will drive as if there is no issues. The light may turn off after several minutes, hours or days. If this is what you are experiencing with your Camry, than it is likely that there may be an intermittent EVAP leak. Usually this is caused by a bad seal in the fuel cap.

The other instance usually occurs while driving, or when the car is running and idling, and the Check Engine Light will illuminate and blink continuously. This is usually accompanied by the engine running rough, such as it does when it is misfiring. If this is what you are experiencing with your Camry, than it is likely that your car is experiencing an engine misfire. This can due to worn out spark plugs, failing ignition coils, or even plugged or leaking fuel injectors.

To be 100% sure of your vehicle's exact problem however, I recommend having your Check Engine Light diagnosed by a certified mechanic. They will have the experience and tools needed to determine why your Check Engine Light is on and what needs to be done to correct the issue, getting your Toyota back on the road quickly and safely.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: All warning lights come on when rainy weather

Hello. This is a water intrusion problem. It sounds like when they installed the harness that something did not get sealed correctly. Most of the time, it is the wiring where it goes into the control module. They need to...

Q: heating/cooling and fan

You likely have a low coolant problem. When your coolant level isn't correct your air won't blow at the right temperature. However, it's also possible that your heater core isn't working properly. It may just be clogged and need to...

Q: How do I eject a CD?

To eject a CD, simply press the eject button, which is located directly next to the CD slot. The CD player will eject the CD most of the way, at which point you can manually pull it out.

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
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...