P1665

2F44 - P1665

Information saved in
DME

Fault code
2F44 - P1665

Fault text
EWS preventing manipulation

Fault description
EWS (Electronic Immobilizer) Tampering via Rolling Code

Condition for fault identification
Test condition:
Starting at T15 ON
Terminal condition: Terminal 15
Voltage condition:
none

Condition for fault memory entry
Four incorrect random code telegrams

Action in service
Conduct start data calibration; start engine, n >2000 rpm for
10 sec.; engine OFF, but Terminal R remains on; restart
engine when wait-state phase elapses; if engine fails to start
WC in CAS does not proceed with switching sequence:
Continue problem diagnosis with CAS

Fault effect and breakdown warning


Driver information
Warning light:
none

Service instruction
none