272B - P0158 (DME)

272B - P0158

Information saved in
DME

Fault code
272B - P0158

Fault text
Oxygen sensor, electrical diagnosis, behind cat., Bank 2

Fault description


Condition for fault identification
Test condition:
* Oxygen sensor heater must be active at least since
K_LSHNK_AKTIV_T
* Exhaust-gas temperature > K_LANK_DIAG_TKat
* LA controller active since K_LANK_DIAG_VK_REG_T
* Oxygen sensor temperature >
K_LANK_DIAG_SONDTEMP
* Catalyst temperature > K_LANK_TKat_SCHW
Terminal condition: Engine running
Voltage condition:
ub > K_ED_PlusMin

Condition for fault memory entry
Oxygen sensor voltage lank_us_b2 >
K_LANK_DIAG_UMax for min.
K_LANK_DIAG_Max_T

Action in service
1. Check plug and wiring harness to post-catalyst oxygen
sensor behind Bank 2 catalyst
2. If OK, replace oxygen sensor

Fault effect and breakdown warning
MIL lamp lights up after engine runs 2X

Driver information
Warning light:
No

Service instruction
none