P2240

2C4E - P2240

Information saved in
DME

Fault code
2C4E - P2240

Fault text
Oxygen sensor before catalytic converter 2, pump current
cable

Fault description
O2 Sensor Positive Current Control Circuit/Open (Bank 2
Sensor 1)

Condition for fault identification
Test condition:
Monitoring on disconnected pump current wire (IP);
Diagnosis conditions:
- Lambda specification outside 3 % relative to lambda = 1
- Voltage at CJ125 at 1.5 V (1.49?.1.51 V)
- Closed-loop lambda control active
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 2 sec.

Action in service
Check plugs/wiring harness, otherwise replace sensor

Fault effect and breakdown warning


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

Service instruction
none