274A

274A - P2626

Information saved in
DME

Fault code
274A - P2626

Fault text
Oxygen sensor pump current calibration fault before cat.
converter, bank 1

Fault description
O2 Sensor Pumping Current Trim Circuit/Open (Bank 1
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 B1 (especially trim circuit wire IA),
2. If OK, replace oxygen sensor, replace DME as indicated

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

Driver information
Warning light:
MIL

Service instruction
none