(EGS) Condition For Fault ID - 1

5A56 - P1900

Information saved in
GS

Fault code
5A56 - P1900

Fault text
DKG: Cooling: no cooling oil detected

Fault description
Transmission Fluid Cooler No Flow Detected

Condition for fault identification
Test condition:
-Diagnosis based on spray sensor unable to detect
temperature rise at sensor during acceleration from rest
-Diagnosis based in pressure sensor unable to detect
pressure fluctuations
Terminal condition: Terminal 15 ON
Voltage condition:
UBat > 10V

Condition for fault memory entry
none

Action in service
Precondition: Engine running
1st step: Read out frequency counter If fault is sporadic:
Delete fault
1st step: Case 1: Frequency <= 3, Fault not active 2nd step:
Delete diagnostic fault code
1st step: Case 2: Frequency > 3 or fault active continuously
2nd step: Is diagnostic fault code 0x5A57 or 0x5A5B
also logged?
2nd step: Case 1: Diagnostic fault code not logged 3rd step:
Delete diagnostic fault code
2nd step: Case 2: Diagnostic fault code logged 3rd step:
Control valve PV7 sticks at 0 cooling
Replace mechatronic module

Fault effect and breakdown warning
none

Driver information
Warning light:
ID 365/ 'Transmission malfunction! Drive gently'
Limp-home mode:
Gears 2, 4 and 6 not available (clutch circuit 2 locked out)

Service instruction
none