Properly functioning oxygen sensors are important when it comes to your vehicle's fuel efficiency and reducing harmful exhaust emissions. That's why checking for, and possibly replacing, a worn-out oxygen sensor is an important part of every routine vehicle tune-up. Replacing a worn-out oxygen sensor will save you money!
A worn oxygen sensor:
Can cause engine performance problems, such as surging and hesitating
Is the number one cause of excessive harmful exhaust emissions
Accelerates catalytic converter damage