• P2A03

  P2A03

  
  

  Diagnosis information - DME V6 DFI

  
  

  Electrical fault, oxygen sensor ahead of catalytic converter, bank 2 NOTE:

  This fault indicates that the DME has detected an implausible temperature range for the oxygen sensor.
  Since lambda control is interrupted at this time, the DME stores this fault as information. The more precise fault cause is stored as a further P code.
  
  

  NOTE: Do not use contact spray on the oxygen sensor's plug connections as this will result in irreparable damage to the lines (blockage of reference air duct).

  
  

  NOTE: Do not interchange the oxygen sensor ahead of catalytic converter with the sensor behind the catalytic converter as this will result in implausible fault entries.

  
  

  Diagnostic conditions

• Battery positive voltage between 10.7 V and 16.0 V
• Engine running
• Exhaust temperature > 250 °C (482 °F)
• Oxygen sensor ahead of catalytic converter operational
• No overrun fuel shutoff
  
  

  Possible fault causes

• Other electric oxygen sensor faults are stored in the fault memory