P0156

273B - P0156

Information saved in
DME

Fault code
273B - P0156

Fault text
Oxygen sensor vibration check behind catalytic converter,
bank 2

Fault description
O2 Sensor Circuit (Bank 2 Sensor 2)

Condition for fault identification
Test condition:
Oxygen sensor signal too low, low threshold 649 mV
(K_LANK_OBD_S_VL_US) for 2
(K_LANK_OBD_S_CNT)
/K_LANK_OBD_S_AUTOM_CNT requests
Terminal condition: Engine running
Voltage condition:
none

Condition for fault memory entry
Full-load K_LANK_OBD_S_VL_T (6s)
for K_LANK_OBD_S_CNT (3x)
/K_LANK_OBD_S_AUTOM_CNT (3x) attempts

Action in service
1. Check exhaust system for leaks
2. If OK, replace post-cat oxygen sensor LSNK B2

Fault effect and breakdown warning
MIL on after engine runs 2x

Driver information
Warning light:
MIL

Service instruction
none