Which component is used to monitor EGR system operation on some vehicles by the EGR system readiness test?
A) EGR temperature sensor
B) mass air flow sensor
C) engine coolant temperature sensor
D) intake air temperature sensor

Question

Quizplus · Accepted Answer

The EGR system readiness test is used to monitor the operation of the EGR (exhaust gas recirculation) system on some vehicles. The EGR temperature sensor is used to measure the temperature of the exhaust gases as they enter the EGR system, and is therefore used to monitor the operation of the system during the readiness test. The other sensors listed (mass air flow sensor, engine coolant temperature sensor, and intake air temperature sensor) are not directly related to the operation of the EGR system.

Which Component Is Used to Monitor EGR System Operation on Some