P0134 Heated Oxygen Sensor Circuit No Activity Detected (bank 1, sensor 1)
Check Conditions
30 seconds or more have passed since the starting sequence was completed. 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
Right bank heated oxygen sensor (front) output voltage does not get across 0.5 volt within about 30 seconds.
- Right bank heated oxygen sensor (front) deteriorated.
- Open circuit in right bank heated oxygen sensor (front) output line.
- Open circuit in right black heated oxygen sensor (front) ground line.
- Right bank heated oxygen sensor (rear) deteriorated.
NOTE: When the right 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 right bank heated oxygen sensor (rear).If the right bank heated oxygen sensor (rear) responds poorly because it has deteriorated, it will improperly correct the right bank heated oxygen sensor (front). Thus, even when closed loop control is being effected, the fluctuation of the right bank heated oxygen sensor (front) output voltage decreases, without intersecting with 0.5 volt. As a result, there is a possibility of DTC P0134 becoming registered.
- PCM failed.
Check Conditions
30 seconds or more have passed since the starting sequence was completed. 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
Right bank heated oxygen sensor (front) output voltage does not get across 0.5 volt within about 30 seconds.
- Right bank heated oxygen sensor (front) deteriorated.
- Open circuit in right bank heated oxygen sensor (front) output line.
- Open circuit in right black heated oxygen sensor (front) ground line.
- Right bank heated oxygen sensor (rear) deteriorated.
NOTE: When the right 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 right bank heated oxygen sensor (rear).If the right bank heated oxygen sensor (rear) responds poorly because it has deteriorated, it will improperly correct the right bank heated oxygen sensor (front). Thus, even when closed loop control is being effected, the fluctuation of the right bank heated oxygen sensor (front) output voltage decreases, without intersecting with 0.5 volt. As a result, there is a possibility of DTC P0134 becoming registered.
- PCM failed.