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DTC P0154 - O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)

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DTC DESCRIPTION P0154 - O2 SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 2 SENSOR 1)

Description:  If the sensor signal value is not changing from the default value, the PCM commands an oscillating air to fuel ratio attempting to detect some movement in the signal value. This DTC sets when the PCM is unable to detect movement in the sensor signal while the air to fuel ratio is oscillating.
Possible Causes: 
  • UO2SPC21 circuit open
  • Contaminated universal heated oxygen sensor bank 2, sensor 1 (HO2S21)
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DZ .