Diagnostic trouble code (DTC) information
Condition
The oil temperature sensor transmits a signal to the control module. This signal is used for functions such as temperature controlled lock-up and the engagement of high-temperature programs. The sensor has an NTC (negative temperature coefficient) resistor. The signal (voltage) decreases with increasing oil temperature. Diagnostic trouble code (DTC) TCM-0044 is stored if the control module receives a signal from the oil temperature sensor corresponding to a temperature below approximately -10°C when the engine is started, and the signal has not changed after the engine has been running for approximately 10 minutes.
Substitute Value
- No substitute values.
Possible Source
- Contact resistance in the terminals
- Open-circuit in the signal cable or in the ground lead
- Short-circuit to supply voltage in the signal cable
- Defective oil temperature sensor.
Fault symptom[s]
- Warning lamp for the automatic transmission flashes
- Malfunction indicator lamp (MIL) lit
- Harsh gear shifting.
HINT: Harsh gear shifting can be caused by:
- No reduction of the line pressure when shifting
- No reduction of the line pressure when moving the gear selector between positions P-R, N-R and N-D
- No request for torque limiting to the engine control module (ECM) when shifting.