Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information TCM-P073100

Condition
The transmission control module (TCM) receives a signal about input and output speed from the transmission's two speed sensors. There is a determined ratio for each gear and the signals help calculate the transmission control module (TCM) gear ratio.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Gear ratio differs by more than 20 %.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Engine braking.

Hint: Driving with gear 1 with geartronic, then released accelerator pedal.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.





Substitute value
- Adaption is blocked.

Possible source
- Contact resistance or one of the solenoids controlling in an incorrect manner.
- Circuit for the solenoid: SLC1, SLB2.
- Mechanical fault in the transmission. Worn components in the transmission causing slippage or too low line pressure.

Fault symptom[s]
- Text window and warning symbol/Yellow symbol and text message
- Engine brake/No/reduced/incorrect function