Advanced Engine Performance Exam
Questions & Answers (Grade A+)
The sensor that must be warmed up and functioning before the
engine management computer will go to closed loop is the _____ -
correct answer ✅O2S
The voltage output of a zirconia oxygen sensor when the exhaust
stream is lean (excess oxygen) is ____. -
correct answer ✅Relatively low (close to zero volts)
Where is sensor 1, bank 1 located on a V-type engine? -
correct answer ✅On the same bank where number 1 cylinder is
located
In the exhaust system upstream of the catalytic converter
A heated zirconia oxygen sensor will have how many wires -
correct answer ✅Three
Four
A high O2S voltage could be due to a ______ -
correct answer ✅Rich exhaust
A low O2S voltage could be due to a _______ -
correct answer ✅Lean exhaust
,Advanced Engine Performance Exam
Questions & Answers (Grade A+)
Defective spark plug wire
An oxygen sensor is being tested with a DMM using the MIN/MAX
function. The readings are min = 78 mV, max = 932 mV, and average
= 442 mV. Tech A says that the engine is operating correctly. Tech B
says that the oxygen sensor is skewed too rich. Who is correct? -
correct answer ✅Technician A only
An oxygen sensor is being tested using a digital storage
oscilloscope. A good oxygen sensor should display how many
switches per second? -
correct answer ✅1 to 5
When testing an oxygen sensor using a digital storage oscilloscope,
how quickly should the voltage change when either propane is
added to the intake stream or a vacuum leak is created? -
correct answer ✅Less than 100 ms
A P0133 DTC is being discussed. Tech A says that a defective heater
circuit could be the cause. Tech B says that a contaminated sensor
could be the cause. Who is correct? -
correct answer ✅Both Technicians A and B
, Advanced Engine Performance Exam
Questions & Answers (Grade A+)
A wide-band oxygen sensor was first used on a Honda in what
model year? -
correct answer ✅1992
A wide-band oxygen sensor is capable of detecting the air-fuel
mixture in the exhaust from _____(rich) to ____(lean) -
correct answer ✅10:1 to 23:1
A conventional zirconia oxygen sensor can be made with what
designs? -
correct answer ✅Cup and planar
A wide-band oxygen sensor can be made using what design? -
correct answer ✅Dual cell and single cell
A wide-band oxygen sensor heater could draw how much current
(amps)? -
correct answer ✅8 to 10 A
A wide-band oxygen sensor needs to be heated to what operating
temperature? -
correct answer ✅1,400F
Questions & Answers (Grade A+)
The sensor that must be warmed up and functioning before the
engine management computer will go to closed loop is the _____ -
correct answer ✅O2S
The voltage output of a zirconia oxygen sensor when the exhaust
stream is lean (excess oxygen) is ____. -
correct answer ✅Relatively low (close to zero volts)
Where is sensor 1, bank 1 located on a V-type engine? -
correct answer ✅On the same bank where number 1 cylinder is
located
In the exhaust system upstream of the catalytic converter
A heated zirconia oxygen sensor will have how many wires -
correct answer ✅Three
Four
A high O2S voltage could be due to a ______ -
correct answer ✅Rich exhaust
A low O2S voltage could be due to a _______ -
correct answer ✅Lean exhaust
,Advanced Engine Performance Exam
Questions & Answers (Grade A+)
Defective spark plug wire
An oxygen sensor is being tested with a DMM using the MIN/MAX
function. The readings are min = 78 mV, max = 932 mV, and average
= 442 mV. Tech A says that the engine is operating correctly. Tech B
says that the oxygen sensor is skewed too rich. Who is correct? -
correct answer ✅Technician A only
An oxygen sensor is being tested using a digital storage
oscilloscope. A good oxygen sensor should display how many
switches per second? -
correct answer ✅1 to 5
When testing an oxygen sensor using a digital storage oscilloscope,
how quickly should the voltage change when either propane is
added to the intake stream or a vacuum leak is created? -
correct answer ✅Less than 100 ms
A P0133 DTC is being discussed. Tech A says that a defective heater
circuit could be the cause. Tech B says that a contaminated sensor
could be the cause. Who is correct? -
correct answer ✅Both Technicians A and B
, Advanced Engine Performance Exam
Questions & Answers (Grade A+)
A wide-band oxygen sensor was first used on a Honda in what
model year? -
correct answer ✅1992
A wide-band oxygen sensor is capable of detecting the air-fuel
mixture in the exhaust from _____(rich) to ____(lean) -
correct answer ✅10:1 to 23:1
A conventional zirconia oxygen sensor can be made with what
designs? -
correct answer ✅Cup and planar
A wide-band oxygen sensor can be made using what design? -
correct answer ✅Dual cell and single cell
A wide-band oxygen sensor heater could draw how much current
(amps)? -
correct answer ✅8 to 10 A
A wide-band oxygen sensor needs to be heated to what operating
temperature? -
correct answer ✅1,400F
