2C24

2C24 - P0040

Information saved in
DME

Fault code
2C24 - P0040

Fault text
Oxygen sensors before catalytic converter mixed up

Fault description
O2 Sensor Signals Swapped Bank 1 Sensor 1 / Bank 2
Sensor 1

Condition for fault identification
Test condition:
Monitoring of interchanged O2 sensors
Implausible O2 sensor signal at idle and during highway
operation
Engine speed exceeds 288 rpm
No overrun cutoff
No fault memories
Terminal condition: Terminal 15, engine on
Voltage condition:
none

Condition for fault memory entry
Lambda control for both banks at control limit

Action in service
Replace pre-cat O2 sensors.

Fault effect and breakdown warning


Driver information
Warning light:
none

Service instruction
none