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Home >> Ford >> 2015 >> Expedition XL, 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P2237 - O2 Sensor Positive Current Control Circuit Open - Bank 1, Sensor 1 - DTC Chart
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P2237 - O2 Sensor Positive Current Control Circuit Open - Bank 1, Sensor 1 - DTC Chart

P2237 - O2 SENSOR POSITIVE CURRENT CONTROL CIRCUIT OPEN - BANK 1, SENSOR 1 - DTC CHART

Description:  This DTC sets when a concern is detected with the circuit used to determine the oxygen content in the exhaust gas.
Possible Causes: 
  • UO2SPC11 circuit open
  • Damaged 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 .