* Loose or damaged gas cap: A loose or damaged gas cap can cause the check engine light to come on. This is because the gas cap helps to seal the fuel system and prevent fuel vapors from escaping. If the gas cap is loose or damaged, it can allow fuel vapors to escape and trigger the check engine light.
* Faulty oxygen sensor: The oxygen sensor monitors the amount of oxygen in the exhaust gas. If the oxygen sensor is faulty, it can send incorrect signals to the engine computer, which can cause the check engine light to come on.
* Spark plug wires: Faulty spark plug wires can also cause the check engine light to come on. This is because the spark plug wires are responsible for delivering electricity from the ignition coil to the spark plugs. If the spark plug wires are faulty, they can prevent the spark plugs from firing properly, which can trigger the check engine light.
* Catalytic converter: The catalytic converter helps to convert harmful exhaust emissions into less harmful substances. If the catalytic converter is damaged or faulty, it can cause the check engine light to come on. This is because the catalytic converter plays an important role in reducing emissions and improving fuel efficiency.
If the check engine light is on in your 2001 Honda Accord, it is important to have the vehicle inspected by a qualified mechanic to determine the cause of the problem. The mechanic will be able to diagnose the problem and recommend the necessary repairs.
