P0153 Heated Oxygen Sensor Circuit Slow Response (bank 2, sensor 1)
Left Bank Heated Oxygen Sensor (front) Circuit
Check Conditions
Engine coolant temperature is higher than 50°C (122°F). Engine speed is at between 1,250 and 3,000 r/min. Volumetric efficiency is at between 24 and 65
percent. Under the closed loop air/fuel control. The throttle valve is open. Short-term fuel trim is at between −30 and +25 percent. More than 3 seconds have elapsed after the abovementioned conditions have been met. The PCM monitors for this condition for 7 cycles of 12 seconds each during the drive cycle.
Judgment Criteria
The left bank heated oxygen sensor (front) sends "lean" and "rich" signals alternately 11 times or less for 12 seconds.
- Left bank heated oxygen sensor (front) deteriorated.
- PCM failed.
Left Bank Heated Oxygen Sensor (front) Circuit
Check Conditions
Engine coolant temperature is higher than 50°C (122°F). Engine speed is at between 1,250 and 3,000 r/min. Volumetric efficiency is at between 24 and 65
percent. Under the closed loop air/fuel control. The throttle valve is open. Short-term fuel trim is at between −30 and +25 percent. More than 3 seconds have elapsed after the abovementioned conditions have been met. The PCM monitors for this condition for 7 cycles of 12 seconds each during the drive cycle.
Judgment Criteria
The left bank heated oxygen sensor (front) sends "lean" and "rich" signals alternately 11 times or less for 12 seconds.
- Left bank heated oxygen sensor (front) deteriorated.
- PCM failed.