P3026

2740 - P3026

Information saved in
DME

Fault code
2740 - P3026

Fault text
Oxygen sensor heating control diagnosis before catalytic
converter, bank 1

Fault description
O2 Sensor Temperature Measurement Operating
Temperature not Reached (Bank 1 Sensor 1)

Condition for fault identification
Test condition:
Heater controller hangs up for a certain period 10s
(K_LSRVK_OBD_REG_T) at limit
Terminal condition: Engine running - Condition idle or part-
load
Voltage condition:
Battery voltage > 9V (k_ed_ubmin)

Condition for fault memory entry
10000 ms

Action in service
1. Check plug and wiring harness on pre-cat oxygen sensor
LSVK B1,
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