P0133

2771 - P0133

Information saved in
DME

Fault code
2771 - P0133

Fault text
Oxygen sensor dynamic diagnosis before catalytic
converter, Bank 1

Fault description


Condition for fault identification
Test condition:
Oxygen load - Forced stimulation with pulse stroke is
active: * Engine temperature > K_O2_OBD_TMOT) *
Engine rpm within range (K_O2_OBD_N_Max
u.K_O2_OBD_N_Min)
* Relative induction charge density within range
(K_O2_OBD_Rf_Max u.K_O2_OBD_RF_Min) * Catalytic
converter temperature within range
Terminal condition: Engine running -
idle or partial load
Voltage condition:
none

Condition for fault memory entry
Amplitude of oxygen sensor in minor diagnosis value
K_LAVK_OBD_DYN_WERT_Max

Action in service
1. Delete stored DTCs from error memory, system test on
oxygen sensor
2. Check exhaust system for leaks
3. Replace Bank 1 pre-catalyst oxygen sensor

Fault effect and breakdown warning
MIL on after engine runs 2x / possible mild effect on
drivability...surge during steady-state operation

Driver information
Warning light:
No

Service instruction
none