P1794

Test 613-616:

Test 617:

SYMPTOM:
P1794-SENSOR GROUND ERROR

When Monitored and Set Condition:
P1794-SENSOR GROUND ERROR
When Monitored: The transmission gear/speed ratio is monitored continuously while the transmission is in gear. This code is set if the gear/speed ratio is not correct for a period of time.
Set Condition: A hard code is set within 3 seconds, an intermittent code sets with 3 seconds, an intermittent code sets within 15 seconds. Code P1794 sets after a TCM reset in neutral and Nt/No equals a ratio of input to output of 2.50.

POSSIBLE CAUSES
- CHECKING SYMPTOMS AND POSSIBLE CAUSES
- LOW BATTERY VOLTAGE CAUSING SYMPTOM INTERMITTENT CODE P1794

Test 238-240:

SYMPTOM:
ADDITIONAL SPEED SENSOR GROUND ERROR (P1794)

POSSIBLE CAUSES
- IGNITION WIRES CAUSE INTERFERENCE WITH SPEED SENSOR
- SPEED SENSOR GROUND CIRCUIT OPEN
- SPEED SENSOR GROUND CIRCUIT OPEN AT INLINE CONNECTOR
- TCM SPEED SENSOR GROUND OPEN