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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2280 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) - DTC P2006 - UXXXX) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> P2254 - O2 Sensor Negative Current Control Circuit / Open (Bank 2 Sensor 1)

P2254 - O2 Sensor Negative Current Control Circuit / Open (Bank 2 Sensor 1)

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P2254 - O2 SENSOR NEGATIVE CURRENT CONTROL CIRCUIT / OPEN (BANK 2 SENSOR 1)

Description:  This DTC sets when a concern is detected with the circuit used to determine the oxygen content in the exhaust gas.
Possible Causes: 
  • UO2SGREF21 circuit open
  • Damaged universal heated oxygen sensor bank 2, sensor 1 (HO2S21)
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test DZ .