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Home >> Ford >> 2015 >> Expedition XL, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P0136 - O2 Circuit (Bank 1, Sensor 2) - DTC CHARTP0136 - O2 Circuit (Bank 1, Sensor 2) - DTC Chart
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P0136 - O2 Circuit (Bank 1, Sensor 2) - DTC CHARTP0136 - O2 Circuit (Bank 1, Sensor 2) - DTC Chart

P0136 - O2 CIRCUIT (BANK 1, SENSOR 2) - DTC CHART

Description:  This DTC sets when a concern is detected with one of the circuits used to determine the oxygen content in the exhaust gas.
Possible Causes: 
  • HO2S12 circuit open
  • SIGRTN circuit open
  • Incorrect connections
  • Damaged or corroded terminals
  • Exhaust temperature significantly higher than expected
  • Damaged heated oxygen sensor bank 1, sensor 2 (HO2S12)
Diagnostic Aids:  Inspect the connectors for signs of damage, water intrusion or corrosion.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test DW .