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・Fair and transparent pricing

Get a quote

What others are asking

Q: Car won't start 2005 Chrysler Town & Country

Hi there - there are several possible causes of your "no crank, no start" scenario. Check battery connections first for good, clean connections. A failed ignition switch, or failed starter solenoid are likely failed components since you indicate you aren't...

Q: Exhaust gas sensors replaced on recurring basis

Hello there. This is a common problem with the Ford Econoline. There are a few things that can lead to the sensors going bad, but the most likely is excessive exhaust heat. When the exhaust gets above a certain temperature...

Q: engine light on for thermostat or temp sensor, EVIC falsely states engine hot due to bad thermostat, also service throttle control

Hello. From what you describe it would appear that your vehicle may be experiencing more than one issue. It is indeed true that the thermostat and coolant sensors are built into a housing, which will require replacement of the entire...

Related articles

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...
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...
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...