P2096

2C31 - P2096

Information saved in
DME

Fault code
2C31 - P2096

Fault text
DME2: Oxygen sensor before catalytic converter, bank 2,
trimming

Fault description
Pre-catalyst oxygen sensor, trim control

Condition for fault identification
Test condition:
Trim control I segment (precision controller with oxygen
sensor behind cat.) below delta lambda threshold < -0.03;
mixture (with lambda control) too lean
Terminal condition: Engine running
Voltage condition:
battery voltage<11V oder Ubatt > 16 volts

Condition for fault memory entry
Fault monitoring criterion must remain present over 1 sec.

Action in service
1. Replace LSU;
2. Repair leak in exhaust system
3. Check wiring harness

Fault effect and breakdown warning
none

Driver information
Warning light:
MIL (2nd driving cycle)

Service instruction
none