Porsche Cayman S (987) F6-3.4L P Code
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P0050
P0050
Diagnosis information - DME V6 DFI
Driver for oxygen sensor heater ahead of catalytic converter, bank 2
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 9 V and 16 V
- Time after engine starts > 10 seconds
- Oxygen sensor heater ahead of catalytic converter active
Possible fault causes
- Short circuit to B+
- Short circuit to ground
- Open circuit in line
- Fuse FE 17 faulty (fuse carrier in plenum panel E-box)
- Loose contact in connector
- Oxygen sensor heater faulty
- Oxygen sensor faulty
Affected contacts on the DFI control unit connector
Connector [B]: - Contact 73
Affected contacts on the oxygen sensor connector behind catalytic converter, bank 2
- Contact 3