Skip the auto shop - Our mechanics make house calls

Q: The car needs a jump after sitting for three days, and now the emission light is on.

asked by on

The car need a jump to get started after sitting for three days. Now the emission light is on
My car's transmission is unknown to me.

A: Hello. The best step to take when any warni...

Hello. The best step to take when any warning light illuminates is to have the vehicle scanned for diagnostic troubleshooting codes. This will tell you what issue the computer has detected within the emissions system. There may have been a moment during the jump starting procedure when the engine received more or less gas than the standard amount.

This may have triggered the warning light that you have received, although there is nothing truly wrong with the vehicle. After enough restarts or miles driven without the issue reoccurring, the light will turn off after passing the test. If the vehicle is running normally, I would not be too concerned yet. Have it scanned and work with the information that is given.

I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the warning light is on and suggest the necessary repairs.

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: Key won't turn in the ignition

Hello. It sounds like you may have two different problems with your van. The key not coming out of the ignition may be caused by a failure in the ignition switch or the shift lock. Both of these are common...

Q: reduce engine speed , trac ,and service engine light on. Had gas pedal assembly and throttle replaced.. Wire harness or computer n

This vehicle may have a wire harness issue of bad crimps on the connectors to the cluster, engine control module (ECM), and other areas that can cause these intermittent failures. The codes you are receiving are most likely the...

Q: Timing belt

Hi there. You need to slowly move each of the sprockets into the correct position by hand. If you notice any binding then you need to stop so that nothing bends. Hopefully when you started it you didn't bend anything....

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...