P0154 Heated Oxygen Sensor Circuit No Activity Detected (bank 2, sensor 1)
Heated Oxygen Sensor Circuit No Activity Detected (bank 2, sensor 1) Circuit
Refer to, DTC P0150 − Left Bank Heated Oxygen Sensor (Front).
Refer to, DTC P0201, P0202, P0203, P0204, P0205, P0206 − Injector Circuit.
DTC SET CONDITIONS
Engine coolant temperature is higher than 76°C (169° F). Engine speed is higher than 1,200 r/min. Volumetric efficiency is at between 30 and 80 percent. Throttle position sensor output voltage is lower than 4 volts. Except while fuel is being shut off. Monitoring time: 30 seconds.
Judgment Criteria
Left bank heated oxygen sensor (front) output voltage does not get across 0.5 volt within about 30 seconds.
TROUBLESHOOTING HINTS
The most likely causes for this code to be set are:
- Left bank heated oxygen sensor (front) deteriorated.
- Open circuit in left bank heated oxygen sensor (front) output line.
- Open circuit in left black heated oxygen sensor (front) ground line.
- Left bank heated oxygen sensor (rear) deteriorated.
NOTE: When the left bank heated oxygen sensor (front) begins to deteriorate, the heated oxygen sensor output voltage will deviate from the voltage when the sensor was new (normally 0.5 volt at stoichiometric ratio). This deviation will be corrected by the left bank heated oxygen sensor (rear).If the left bank heated oxygen sensor (rear)responds poorly because it has deteriorated, it will improperly correct the left bank heated oxygen sensor (front). Thus, even when closed loop control is being effected, the fluctuation of the left bank heated oxygen sensor (front) output voltage decreases, without intersecting with 0.5 volt. As a result, there is a possibility of DTC P0154 becoming registered.
- PCM failed.
Heated Oxygen Sensor Circuit No Activity Detected (bank 2, sensor 1) Circuit
Refer to, DTC P0150 − Left Bank Heated Oxygen Sensor (Front).
Refer to, DTC P0201, P0202, P0203, P0204, P0205, P0206 − Injector Circuit.
DTC SET CONDITIONS
Engine coolant temperature is higher than 76°C (169° F). Engine speed is higher than 1,200 r/min. Volumetric efficiency is at between 30 and 80 percent. Throttle position sensor output voltage is lower than 4 volts. Except while fuel is being shut off. Monitoring time: 30 seconds.
Judgment Criteria
Left bank heated oxygen sensor (front) output voltage does not get across 0.5 volt within about 30 seconds.
TROUBLESHOOTING HINTS
The most likely causes for this code to be set are:
- Left bank heated oxygen sensor (front) deteriorated.
- Open circuit in left bank heated oxygen sensor (front) output line.
- Open circuit in left black heated oxygen sensor (front) ground line.
- Left bank heated oxygen sensor (rear) deteriorated.
NOTE: When the left bank heated oxygen sensor (front) begins to deteriorate, the heated oxygen sensor output voltage will deviate from the voltage when the sensor was new (normally 0.5 volt at stoichiometric ratio). This deviation will be corrected by the left bank heated oxygen sensor (rear).If the left bank heated oxygen sensor (rear)responds poorly because it has deteriorated, it will improperly correct the left bank heated oxygen sensor (front). Thus, even when closed loop control is being effected, the fluctuation of the left bank heated oxygen sensor (front) output voltage decreases, without intersecting with 0.5 volt. As a result, there is a possibility of DTC P0154 becoming registered.
- PCM failed.