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Home >> Ford >> 2013 >> Focus S, Automatic DCT Trans, Gas >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls (Except Diesel & Hybrid) - DTC P164A - P2A04, DTC U0046- U300C >> DTC P2254: O2 Sensor Negative Current Control Circuit Open: Bank 2, Sensor 1
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DTC P2254: O2 Sensor Negative Current Control Circuit Open: Bank 2, Sensor 1

DTC P2254: O2 SENSOR NEGATIVE CURRENT CONTROL CIRCUIT OPEN: BANK 2, SENSOR 1

Description:  This DTC sets when the PCM detects a concern with the circuit used to determine the oxygen content in the exhaust gas.
Possible Causes: 
  • UO2SGREF circuit open
  • Damaged universal HO2S
Diagnostic Aids: 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DZ .