274B

274B - P2629

Information saved in
DME

Fault code
274B - P2629

Fault text
Bank 2 pre-catalyst oxygen sensor pumping current
calibration error

Fault description


Condition for fault identification
Test condition:
* Engine temperature > K_LAVK_OBD_TMOT * Sensor
temperature > K_LAVK_OBD_VK_TEMP * since
recognition of overrun an air mass flow of
K_LAVK_OBD_SA_ML_SUM must have occurred
Terminal condition: Engine running - status overrun cutoff
Voltage condition:
none

Condition for fault memory entry
Oxygen sensor is available, sensor voltage >
K_LAVK_OBD_SA_DIAG_OL

Action in service
1. Check plug and wiring harness to pre-catalyst oxygen
sensor forward of Bank 2 catalyst (especially IA trim wire)
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:
No

Service instruction
none