Porsche Cayman S (987) F6-3.4L P Code
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P0041
P0041
Diagnosis information - DME V6 DFI
Oxygen sensors behind catalytic converter interchanged
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 V and 16 V
- Time after engine starts > 10 seconds
- Lambda control active
Possible fault causes
- Oxygen sensors downstream interchanged
- Reversed line polarity
Affected contacts on the DFI control unit connector
Connector [B]: - Contact 77
- Contact 76
- Contact 55
- Contact 54
Affected contacts on oxygen sensor connector ahead of catalytic converter, bank 1
Connector [A]: - Contact 3
- Contact 4
Affected contacts on oxygen sensor connector ahead of catalytic converter, bank 2
Connector [A]: - Contact 3
- Contact 4