What could cause the check engine light to come on?
Don’t Just Turn It Off; Fix the Problem The light could be a minor issue, such as a faulty gas cap, or it could mean something more serious, such as a misfiring engine.
The check engine light — more formally known as the malfunction indicator lamp — is a signal from the car’s engine computer that something is wrong..
What are signs of a bad battery?
Watch for these five telltale signs of a bad battery so you aren’t caught out in the cold!Dim headlights. … Clicking sound when you turn the key. … Slow crank. … Needing to press on the gas pedal to start. … Backfiring.
Can a low battery cause electrical problems?
A defective battery will not charge properly, which can affect the voltage regulator and alternator. … Low voltage can also be caused by poor connections to the battery. Intermittent electrical problems – those that come and go at random times – might be caused by loose or corroded connections.
How do you know if your car needs a new battery?
7 signs your car battery is dyingA slow starting engine. Over time, the components inside your battery will wear out and become less effective. … Dim lights and electrical issues. … The check engine light is on. … A bad smell. … Corroded connectors. … A misshapen battery case. … An old battery.
What problems can a low battery cause?
Low battery voltage can also affect fuel delivery by causing the fuel pump to run slower than normal. This, in turn, causes, low fuel pressure and a lean fuel condition. Under some conditions, a low battery may even prevent one or more injectors from opening normally causing lean misfire and/or hard starting.