GM Genuine Parts AFS138 Heated Oxygen Sensor

Maintenance Tips

• With today’s computerized engine systems, maintaining your vehicle’s exhaust and emissions system is best left to a professional technician.
• When replacing oxygen sensors, it is important to use GM OE parts. Parts that do not meet GM OE service specifications, such as element type or cover design, can be detrimental to emission controls. Increased nitrogen dioxide emissions, higher exhaust gas temperature, misfires, or loss of engine power can result from using noncompliant sensors. This can also lead to engine component failure caused by overheating of the catalytic converter.
• It is critical that you have the right part with the right wire length for your vehicle. Excess wire can be exposed to extreme heat and abrasions that can lead to premature wire failure. GM OE Oxygen (O2) Sensors use the correct sensor components that GM has validated to engine-specific applications. These sensors are manufactured to detect oxygen content in a vehicle’s exhaust gases, as well as aid in emissions performance. GM Genuine Parts and ACDelco O2 Sensors.

FAQ

• Can I replace an oxygen (O2) sensor on my own? Yes. But with today’s computerized engine systems, maintaining your vehicle’s exhaust and emissions system is best left to a professional technician.
• Is there a problem when my Check Engine light turns on? Yes. It could be due to a contaminated sensor probe, broken sensor body, internal sensor failure, external electrical failure, or other issue. C
• an GM OE O2 sensors help maintain emissions performance for my vehicle? Yes, GM OE Oxygen (O2) sensors are the primary devices on your vehicle that measure the proportion of oxygen in emissions and gases with the amount in outside air. Using this measurement, the vehicle computer can adjust the air/fuel ratio to ensure emissions performance.