OUR NEW PULSE PLUS WORKS ON BOTH NARROW AND WIDE BAND SENSORS.
Please turn the engine OFF before reaching into the engine compartment!
Locate the O2 sensor being tested.
If your signal never fluctuates rapidly, the O2 sensor could be faulty.
Checking your O2 sensor voltages can be tricky on these vehicles, as some of them add higher voltage to the sensor signal when the sensor is not at full operational temperature. For this reason, it is important to test the O2 signal voltage when the engine is HOT and when depressing the gas pedal.
If your signal never fluctuates between .1 and .9 volts, or 2.5 and 3.5 volts, the O2 sensor could be faulty,.