P1799

Test 1 Through 3:

Test 4 Through 5:

Symptom:
P1799-CALCULATED OIL TEMPERATURE IN USE

When Monitored and Set Condition:
P1799-CALCULATED OIL TEMPERATURE IN USE

When Monitored:
Whenever the engine is running.

Set Condition:
The code will set if the thermistor voltage is out of range (below 0.07 volts or greater than 4.94 volts). The code will also set if continuous erratic thermistor voltage is sensed and/or thermistor temperature stays below 80°F for an extended time.

POSSIBLE CAUSES
CHECKING SYMPTOMS AND POSSIBLE CAUSES
LOW BATTERY VOLTAGE
INTERMITTENT CODE P1799

Test 1 Through 3:

Test 4 Through 7:

Test 8 Through 12:

Test 13 Through 17:

Test 18:

Symptom
ADDITIONAL CALCULATED OIL TEMPERATURE IN USE (P1799)

POSSIBLE CAUSES
TRANSMISSION TEMP SENSOR VOLTAGE OUT OF RANGE IN ANY GEAR
TRANSMISSION TEMPERATURE SENSOR VOLTAGE NOT CORRECT FOR FLUID TEMP
INTERMITTENT OPEN OR SHORT IN TRS TO TCM HARNESS
SPEED SENSOR GROUND CIRCUIT OPEN
SPEED SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE
TRANS TEMP SENSOR SIGNAL SHORT TO GND
TRANS TEMP SIGNAL CIRCUIT OPEN
TRANS TEMP SIGNAL SHORT TO VOLTAGE
TRANS TEMP SENSOR RESISTANCE OUT OF TOLERANCE
TRS CONNECTOR DAMAGED
TRS TRANS TEMP SENSOR FAULTY
TRS TRANS TEMP SENSOR SHORTED
TCM SPEED SENSOR GROUND OPEN
TCM TRANS TEMP SENSOR SIGNAL SHORTED
TCM TRANS TEMP SIGNAL OUTPUT HIGH
TCM TRANS TEMP SIGNAL OUTPUT LOW