231F04

231F04 - U1190

Information saved in
DME

Fault code
231F04 - U1190

Fault text
Electronic transmission control (EGS), PT-CAN, PT-CAN2:
Communication fault

Fault description
The diagnostic function monitors the two communications
paths A CAN and FA CAN between the transmission and
the engine-management ECU.

Condition for fault identification
Test condition:
The fault is recognized when communications with the EGS
electronic gearbox control in the A and FA CAN break
down.
Potential problem source(s):
- Interference in communications to EGS via A and FA
CAN
Terminal condition: Terminal 15
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- none

Condition for fault memory entry
This fault is logged in the control module's fault memory
immediately.

Action in service
- Carry out system analysis.

Fault effect and breakdown warning
Breakdown notice:
None
Possible apparent symptoms:
- Transmission in emergency program

Driver information
Warning light:
- ECE emissions warning lamp: off
- ECE electronic engine power reduction: on
- CC message: none
- US emissions warning lamp: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
None