2746 - P3032 (DME)

2746 - P3032

Information saved in
DME

Fault code
2746 - P3032

Fault text
Oxygen sensor, reference-resistance diagnosis, before cat.,
bank 1

Fault description
O2 Sensor Internal Resistance Measurement Path
Amplification Factor Plausibility (Bank 1 Sensor 1)

Condition for fault identification
Test condition:
LA-Ri offset adaptation value less than -73 mV
(K_LSRVK_OBD_REF_OFFS_MIN) or greater than 73
mV (K_LSRVK_OBD_REF_OFFS_MAX) for 3
(K_LSRVK_OBD_REF_OFFS_CNT) offset adaptations
Terminal condition: Engine running - Condition idle or part-
load
Voltage condition:
Battery voltage > 9V (k_ed_ubmin)

Condition for fault memory entry
K_LSRVK_OBD_REF_CNT (2x) incorrect diagnostic
results

Action in service
1. Check plug and wiring harness on pre-cat oxygen sensor
LSVK B1,
2. If OK, replace oxygen sensor, replace DME as indicated

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

Driver information
Warning light:
MIL

Service instruction
none