P2198

2727 - P2198

Information saved in
DME

Fault code
2727 - P2198

Fault text
Oxygen sensor, plausibility before cat., bank 2

Fault description
O2 Sensor Signal Biased/Stuck Rich (Bank 2 Sensor 1)

Condition for fault identification
Test condition:
Oxygen sensor voltage behind catalytic converter >= 879
mV (K_LAVK_OBD_PLAU_LANK_MAX) (rich) and
lambda factor at front of catalyst >= 1.08
(K_LAVK_OBD_PLAU_LAM_MAGER) (lean) for a total
of 1 (K_LAVK_OBD_PLAU_M_CNT) after a lag period at
onset of operation amounting to 10 sec.
(K_LAVK_OBD_PLAU
Terminal condition: Engine running - Condition idle or part-
load
Voltage condition:
none

Condition for fault memory entry
100 ms

Action in service
1. Clear fault memory, oxygen sensor system test
2. Check plug and wiring harness to pre-cat oxygen sensor
LSVK B2
3. Check induction system and ehaust system for leaks
4. Replace oxygen sensor

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

Driver information
Warning light:
MIL

Service instruction
none