How should the PCM react if the oxygen sensor detects a low oxygen level in the exhaust stream?
A) decrease fuel delivery
B) increase fuel delivery
C) open the EGR valve
D) open the EVAP canister purge solenoid

Question

Quizplus · Accepted Answer

If the oxygen sensor detects a low oxygen level in the exhaust stream, it indicates that there is too much fuel in the mixture. In this case, the PCM should decrease fuel delivery to achieve a proper air/fuel ratio.

How Should the PCM React If the Oxygen Sensor Detects