P3033

2747 - P3033

Information saved in
DME

Fault code
2747 - P3033

Fault text
Diagnosis of Bank 2 pre-catalyst oxygen sensor's reference
resistance

Fault description


Condition for fault identification
Test condition:
Oxygen sensor internal resistance gain adaptation completed
Terminal condition: Engine running -
idle or partial load
Voltage condition:
ub > K_ED_PlusMin

Condition for fault memory entry
LA internal resistance gain adaptation value less than
K_LSRVK_OBD_REF_GAIN_Min or greater than
K_LSRVK_OBD_REF_GAIN_Max for
K_LSRVK_OBD_REF_CNT gain adaptations

Action in service
1. Check plug and wiring harness to pre-catalyst oxygen
sensor forward of Bank 2 catalyst
2. If OK, replace oxygen sensor, or possibly DME

Fault effect and breakdown warning
MIL lamp on after engine runs 2x / Small influence on
drivability

Driver information
Warning light:
No

Service instruction
none