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Home >> Ford >> 2015 >> Fusion Titanium, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P0134 - O2 Circuit No Activity Detected (Bank 1, Sensor 1) - DTC Chart
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P0134 - O2 Circuit No Activity Detected (Bank 1, Sensor 1) - DTC Chart

P0134 - O2 CIRCUIT NO ACTIVITY DETECTED (BANK 1, SENSOR 1) - DTC CHART

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: 
  • UO2SPC11 circuit open
  • Deteriorating universal heated oxygen sensor bank 1, sensor 1 (HO2S11)
Diagnostic Aids: 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test DZ .