P1794

Test 1 Through 3:

Test 4 Through 6:

SYMPTOM:
P1794-SPEED SENSOR GROUND ERROR

When Monitored and Set Condition:
P1794-SPEED SENSOR GROUND ERROR

When Monitored:
The transmission gear ratio is monitored continuously while the transmission is in gear.

Set Condition:
After a TCM reset in neutral and Input/Output equals a ratio of input to output of 2.50

POSSIBLE CAUSES
INTERMITTENT WIRING & CONNECTORS
SPEED SENSOR GROUND CIRCUIT OPEN
TCM (SPEED SENSOR GROUND)