Skip the auto shop - Our mechanics make house calls

Q: I just jumped my sons car off and now my check engine light is on. What happened?

asked by on

My son jumped his car off with my car and now my check engine light is on. I'm not sure what could have caused this. Any ideas?

My car has 151000 miles.
My car has a manual transmission.

A: When you jump started the other vehicle you...

When you jump started the other vehicle you may have caused a voltage surge or drop in your computer system that set a code causing the check engine light to come on. You will need a mechanic like one from YourMechanic come to you and scan the computer to see what the code is and diagnose the code. If it is a low voltage code then all the mechanic will need to do is clear the code and check your voltage at the battery to make sure nothing was damaged when you jump started the other vehicle. In the future when jump starting another vehicle do not have your vehicle running when the other vehicle is cranked over.

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: Code P300. Tried fixing with no success.

When you receive the OBD code P0300, it means your Buick LeSabre is experiencing a random misfire. This code is given because one or more of the engine’s cylinders are misfiring. While our first instinct is to think spark plugs,...

Q: the car wont pass emmissions the code po420 comes up

Fault code P0420 indicates the catalytic converter is operating below proper efficiency. There are two oxygen (O2) sensors in the exhaust system. One just before and one just after the catalytic converter. The ecu reads the first O2 sensor to...

Q: squeal wheel noise

That squealing noise typically comes from the wear indicator on disc brake pads. The built-in noise maker indicates that it is time for a brake inspection or brake pad replacement. But when it concerns a safety system like brakes, we...

Related articles

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...
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.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.