YAWA: O2 Sensors
QUESTION: Dear T2: How many oxygen sensors are on todays engines?
Tech In Training – Monitoring Emission Efficiency with O2 Sensors
As modern OBD II technology marches on, its clear that the zirconia-based oxygen sensor now is being sold more as a basic repair part than as a preventive maintenance part, and it changes the way technicians diagnose and sell oxygen sensors. To illustrate the difference, understand that an oxygen sensor replacement used to be considered
Oxygen Sensors And Catalyst Efficiency
Newer air/fuel ratio or wide-band sensors can detect a wide range of fuel conditions.
Understanding The Operation Of Oxygen Sensors
They play a vital role in achieving the stoichiometric ideal – but there’s more to it than just that.
Oxygen Sensor Questions Answered
If an O2 sensor is not reading properly or is borderline, it should be replaced regardless of its age or mileage.
Oxygen Sensor And Catalyst Efficiency
The catalyst efficiency monitor verifies that the catalytic converter is operating at a high enough efficiency rating to keep exhaust emissions within predetermined values.
Understanding Crankshaft Position Sensors
Modern engines need to know the position of the crankshaft and camshafts. Why?
Seeing The Big Picture With AFR Sensors
Air/fuel ratio (AFR) sensors have become commonplace in today’s automobiles, taking over where traditional O2 sensors have left off.
Oxygen Sensor Heater Codes
One of the most difficult problems to cure is an oxygen sensor code related to the heater circuit. If you decide to just put in a new sensor and clear the codes, there is a chance the code will come back because the malfunction in the circuit is not in the oxygen sensor.
Oxygen Sensor And Catalyst Efficiency
The catalyst efficiency monitor verifies the catalytic converter is operating at a high enough efficiency rating to keep exhaust emissions within the predetermined values. The PCM compares the signals from the upstream and downstream oxygen sensors to determine the state of the converter. These “tests” are called the readiness monitors.
