P2629

274B - P2629

Information saved in
DME

Fault code
274B - P2629

Fault text
Oxygen sensor pump current calibration fault before cat.
converter, bank 2

Fault description
O2 Sensor Pumping Current Trim Circuit/Open (Bank 2
Sensor 1)

Condition for fault identification
Test condition:
Oxygen sensor is available, oxygen sensor voltage > 4951
mV (K_LAVK_OBD_SA_DIAG_OL)
Terminal condition: Engine running - overrun condition
Voltage condition:
none

Condition for fault memory entry
after a defined SA phase the lag period
K_LAVK_OBD_SA_T (2.5 sec) must be completed

Action in service
1. Check plug and wiring harness on pre-cat oxygen sensor
LSVK B2 (especially trim circuit wire IA),
2. If OK, replace oxygen sensor

Fault effect and breakdown warning
MIL lamp on after engine runs 2x /Small influence on
drivability

Driver information
Warning light:
MIL

Service instruction
none