If the malfunction indicator light is on and a DTC P0131 is stored for O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1), what is the most likely cause for this code to be set?
A) EGR valve stuck open
B) EVAP purge solenoid stuck open
C) vacuum leak
D) high fuel pressure

Question

Quizplus · Accepted Answer

A vacuum leak can cause a lean air/fuel mixture, which can cause the O2 sensor to read low voltage. This can lead to the code being set for O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1). The other options listed would not directly affect the operation of the O2 sensor in this manner.

If the Malfunction Indicator Light Is on and a DTC