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Home >> Ford >> 2012 >> Transit Connect Base, Van Cargo >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> DTC Diagnosis >> DTC P2A01: O2 Circuit Range / Performance Bank 1, Sensor 2
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DTC P2A01: O2 Circuit Range / Performance Bank 1, Sensor 2

P2A01 - O2 CIRCUIT RANGE / PERFORMANCE BANK 1, SENSOR 2

Description:  The PCM monitors the heated oxygen sensor (HO2S) for an out of range low voltage concern. This DTC sets when the HO2S voltage is out of range low for a calibrated period of time.
Possible Causes: 
  • Crossed HO2S and SIGRTN circuits
  • Contaminated or damaged HO2S
  • Deteriorating HO2S
  • Corrosion
  • Incorrect harness connections
Diagnostic Aids:  Inspect the connectors for signs of damage, water ingress, or corrosion.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DW .