P3023

2C4C - P3023

Information saved in
DME

Fault code
2C4C - P3023

Fault text
Control module, internal fault: oxygen sensor module 2

Fault description
O2 Sensor Disturbed SPI Communication to WRAF-IC
(Bank 2 Sensor 1)

Condition for fault identification
Test condition:
Communications fault between ECU and CJ125 chip (SPI
bus)
Terminal condition: Terminal 15 ON
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
Replace control module

Fault effect and breakdown warning


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

Service instruction
none