P2629

P2629

Diagnosis information - DME V6 DFI

Oxygen sensor ahead of catalytic converter, bank 2 - pumping voltage line

NOTE: Do not use contact spray on the oxygen sensor plug connections, as this may cause irreparable damage to the wiring (blocking the reference air channels).

NOTE: Do not confuse oxygen sensor ahead of catalytic converter and oxygen sensor behind catalytic converter as this will cause implausible fault entries.

Diagnostic conditions
- Battery positive voltage between 10 V and 16 V
- Time after engine starts > 10 seconds

Possible fault causes
- Open circuit in the pump voltage line
- Short circuit to B+ in pumping voltage line
- Short circuit to ground in pumping voltage line
- Oxygen sensor faulty

Affected contacts on the DFI control unit connector
Connector [B]:
- Contact 59

Affected contacts on the oxygen sensor connector ahead of catalytic converter, bank 2
- Contact 1