Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information TCM-P089709

Condition
The oil temperature sensor provides the Transmission control module (TCM) with a signal that is used, among other things, for the temperature controlled lock-up and engagement high temperature program functions. The sensor has an NTC (negative temperature coefficient) resistor. The signal (voltage) decreases with increasing oil temperature.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The transmission is subjected to a very hard load for a long period of time.
The time that is required to store the diagnostic trouble code (DTC) is greatly temperature-dependent, and only oil temperatures above 100 °C will affect this diagnostic trouble code (DTC).
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition on.

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
- Transmission control module (TCM) assumes an oil temperature of 80 °C.

Possible source
- Short-circuit to ground in the signal cable.
- Transmission fluid temperature sensor not working.
- The transmission has been exposed to extreme load and high ambient temperature.

Fault symptom[s]
- Text window and warning symbol/Yellow symbol and text message