05/20/2025
The image depicts an exhaust manifold with oxygen sensors, key components in a vehicle's emission control system.
Function:
Oxygen sensors measure the amount of oxygen in the exhaust gas. This data is sent to the car's computer (ECU) to adjust the air-fuel ratio for optimal combustion and reduced emissions.
Location:
The image shows two sensors:
Upstream sensor: Located before the catalytic converter.
Downstream sensor: Located after the catalytic converter.
Importance:
Proper functioning ensures peak engine performance, prevents issues like misfires and rough idling, and maintains fuel efficiency.
Warning Signs:
Faulty sensors can cause the check engine light to illuminate, rough idling, decreased power, and black exhaust smoke.
Maintenance:
Replacing an oxygen sensor is a relatively simple task.
