4F88

4F88 - P17E7

Information saved in
GS

Fault code
4F88 - P17E7

Fault text
Ratio monitoring, gearshift 2-3

Fault description
Ratio Monitoring Shift 2-3

Condition for fault identification
Test condition:
Positive torque transfer in D or R
Torque converter turbine speed >0 rpm
Engine speed >400 rpm
Terminal condition: Ignition ON
Voltage condition:
7 ... 16V

Condition for fault memory entry
Symptom counter

Action in service
If fault is passive: Check fluid level according to
specifications and add fluid as indicated. Clear fault memory
and conduct road test under monitored conditions (upshift
and downshift through all gears). If fault code is not
registered, transmission OK
If fault code is entered repeatedly Replace transmission.

Fault effect and breakdown warning


Driver information
Warning light:
E-gearshift: CC-ID420
M-gearshift: CC-ID420
Electr. default mode 2nd gear fix

Service instruction
none