NTK Oxygen Sensors Archives - UnderhoodService
You Have An Oxygen Sensor Code, Now What?

With hundreds of diagnostic codes for oxygen sensors, it is no wonder technicians face a daunting task when identifying the cause (or causes) of an oxygen sensor-specific trouble code. Knowing how to accurately interpret location codes is the first step in the diagnostic process that can be used along with fuel trims and catalyst efficiency.

Making Sense Of Modern Emissions Sensors

For over 30 years, vehicles have used at least one oxygen sensor for fuel control, but modern emissions sensors are quite different. The traditional switching oxygen sensor is still common; yet most late-model vehicles are moving toward wide range, air/fuel sensors for primary fuel control.