* Oxygen sensor: The oxygen sensor measures the amount of oxygen in the exhaust gas, and helps the engine control unit (ECU) adjust the fuel mixture accordingly. If the oxygen sensor is faulty, it can cause the check engine light to come on.
* Mass air flow sensor: The mass air flow sensor measures the amount of air entering the engine, and helps the ECU adjust the fuel mixture accordingly. If the mass air flow sensor is faulty, it can cause the check engine light to come on.
* Spark plugs and wires: Spark plugs deliver the electrical spark that ignites the air/fuel mixture in the engine. If the spark plugs or wires are faulty, it can cause the engine to misfire, which can cause the check engine light to come on.
* Fuel injector: Fuel injectors spray the fuel into the engine's cylinders. If a fuel injector is faulty, it can cause the engine to run lean or rich, which can cause the check engine light to come on.
* Catalytic converter: The catalytic converter helps to clean the exhaust gas by converting harmful pollutants into less harmful substances. If the catalytic converter is faulty, it can cause the check engine light to come on.
ABS light:
* Wheel speed sensor: The wheel speed sensors monitor the speed of each wheel, and help the ABS system determine when a wheel is about to lock up. If a wheel speed sensor is faulty, it can cause the ABS light to come on.
* ABS control module: The ABS control module controls the ABS system. If the ABS control module is faulty, it can cause the ABS light to come on.
* ABS pump: The ABS pump provides the hydraulic pressure that is used to prevent the wheels from locking up. If the ABS pump is faulty, it can cause the ABS light to come on.
Airbag light:
* Airbag sensor: The airbag sensors monitor the impact force in a collision, and trigger the deployment of the airbags if the impact force is high enough. If an airbag sensor is faulty, it can cause the airbag light to come on.
* Airbag control module: The airbag control module controls the deployment of the airbags. If the airbag control module is faulty, it can cause the airbag light to come on.
* Airbag wiring: The airbag wiring connects the airbag sensors, the airbag control module, and the airbags. If the airbag wiring is faulty, it can cause the airbag light to come on.
