Could A Bad Battery Cause The Check Engine Light To Come On

The check engine light may come on for many different reasons such as a faulty mass air flow sensor a faulty o2 sensor a bad catalytic converter bad spark plugs or spark plug wires and many other reasons. This may cause the check engine light to flip on. Your battery looks misshapen swollen and plump.

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If the battery is giving you problems then it should be replaced and the computer scanned for codes to see what is going on.

Could a bad battery cause the check engine light to come on.

When a battery is faulty or undercharged it won t be able to send the right amount of energy to your vehicle s computer. If a bad alternator belt is the cause of the battery warning light it may also cause squealing from the hood when the vehicle is running. When you take your car to the mechanic he will test your car s battery before doing any further diagnostic testing. If it runs great don t dump in any more money.

So many of today s car problems are caused by faulty undercharged batteries or poor electrical connections. These terminals are a bad design that often cause starting and charging problems. If the battery is low then it can cause the check engine light to come on and other electrical issues to occur. It is entirely possible that the battery was faulty causing low voltage at the computer which in turn can turn on the check engine light.

If you drive a newer model car you may also have a handy battery warning light on your dashboard. I have seen people change converters and oxygen sensors spending 2000 only to have the light come on with the same codes. It can drain the battery trigger the check engine light or even prevent the vehicle from starting. An aftermarket alarm can wreak havoc on your car if it s not installed properly.

It is entirely possible that the battery was faulty causing low voltage at the. Most good shops today will test a car s battery before. Due to the wide range of possibilities for the check engine light to come on the best and most efficient way to narrow down the scope of what may be causing this is to have the vehicle. Most car problems emanate from a faulty undercharged battery or a poor electrical connection.

4 corroded battery terminals the positive and negative battery terminals are channels for the electricity so it s important not to increase the resistance by covering them with other substances that are poor conductors. With a faulty battery there s bound be low voltage at the car s computer which may cause the check engine light to come on. I have seen false engine light codes on many cars.