2727 - P2197 (DME)

2727 - P2197

Information saved in
DME

Fault code
2727 - P2197

Fault text
Oxygen sensor plausibility before catalytic converter, Bank
2

Fault description


Condition for fault identification
Test condition:
* Engine temperature > K_LAVK_OBD_TMOT * relative
charge density within the limits
K_LAVK_OBD_PLAU_RF_Max and
K_LAVK_OBD_PLAU_RF_Min; no dynamic response *
exhaust gas temperature within the limits
K_LAVK_OBD_PLAU_TKat_Max and
K_LAVK_OBD_PLAU_TKat_Min * after W
Terminal condition: Engine running -
idle or partial load
Voltage condition:
none

Condition for fault memory entry
Oxygen sensor voltage behind catalyst <=
K_LAVK_OBD_PLAU_LANK_Min (lean) and lambda AF
ratio forward of cat <= K_LAVK_OBD_PLAU_LAM_fett
(rich) for a number of K_LAVK_OBD_PLAU_F_CNT after
a lag period at start of operation of
K_LAVK_OBD_PLAU_T seconds

Action in service
1. Delete stored DTCs from error memory, system test on
oxygen sensors
2. Check plug and wiring harness on Bank 2 pre-catalyst
oxygen sensor
3. Check induction and exhaust systems for leaks
4. Replace oxygen sensor

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

Driver information
Warning light:
No

Service instruction
none